Bridge Statistics for Boston, Massachusetts (MA)
Condition, Traffic, Stress, Structural Evaluation, Project Costs

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Structure Number: B16003381MUNNBI,  Location: OVER NEPONSET RIV AT MILT (Lat: 42.270969,  Lng: -71.068147),  Route carried "on" structure: City street ,  Year Built: 1765,  Year Reconstructed: 2006,  Status: Open,  Structure Length: 3.63m (11.91ft),  Average Daily Traffic: 30,800 (year 2018),  Truck Traffic: 3%,  Average Future Daily Traffic: 34,113 (year 2031),  Design Load: HS 20,  Features Intersected: WATER NEPONSET RIVER,  Facility Carried by Structure: HWY ADAMS ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 13.1m (43.0ft),  Skew: 2 degrees,  Material/Design: Masonry,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 2,  Number Of Approach Spans: 3,  Length of Maximum Span: 9.8m (32.2ft),  Curb or Sidewalk Widths: Left: 2.1m (6.9ft),  Right: 2.0m (6.6ft),  Curb-To-Curb Width: 12.9m (42.3ft),  Out-to-Out Width: 18.2m (59.7ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 62.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 37.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 3.70m (12.14ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 24 months,  Inspection Date: November 2020,  Underwater Inspection Date: August 2020,  Bridge Improvement Cost: $175,000,  Roadway Improvement Cost: $18,000,  Total Project Cost: $263,000 ( Estimate for 2022),  Deck Structure Type: Other,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B16004B5JMUNNBI,  Location: AT WINTHROP TOWN LINE (Lat: 42.382633,  Lng: -70.994264),  Route carried "on" structure: State highway 145,  Year Built: 2013,  Status: Open,  Structure Length: 6.22m (20.41ft),  Average Daily Traffic: 34,100 (year 2019),  Truck Traffic: 3%,  Design Load: HS 25 or greater,  Features Intersected: WATER BELLE ISLE INLET
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.704,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Navigation Control: Yes ( Vertical Clearance: 1.8m (5.9ft), Horizontal Clearance: 7.6m (24.9ft)),  Material/Design: Prestressed concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 11.8m (38.7ft),  Curb or Sidewalk Widths: Left: 2.1m (6.9ft),  Right: 2.1m (6.9ft),  Curb-To-Curb Width: 13.4m (44.0ft),  Out-to-Out Width: 18.4m (60.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 66.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 61.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: July 2021,  Underwater Inspection Date: May 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing

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Structure Number: B160064F3DOTNBI,  Location: .64 KM E OF N HARVARD ST (Lat: 42.361242,  Lng: -71.116753),  Route carried "on" structure: City street ,  Year Built: 1925,  Status: Open,  Structure Length: 6.40m (21.00ft),  Average Daily Traffic: 44,700 (year 2019),  Truck Traffic: 6%,  Average Future Daily Traffic: 50,696 (year 2032),  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: HWY CAMBRIDGE ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 2 degrees,  Navigation Control: Yes ( Vertical Clearance: 4.9m (16.1ft), Horizontal Clearance: 21.3m (69.9ft)),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 22.9m (75.1ft),  Curb or Sidewalk Widths: Left: 2.6m (8.5ft),  Right: 2.6m (8.5ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 18.7m (61.4ft)

Condition: Superstructure: Poor,  Substructure: Fair,  Channel: Fair,  Operating Rating: 54.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 32.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Meets minimum limits,  Length Of Structure Improvement: 6.50m (21.33ft),  Designated Inspection Frequency: Every 12 months,  Underwater Inspection Frequency: Every 24 months,  Other Special Inspection Frequency: Every 12 months,  Inspection Date: July 2021,  Underwater Inspection Date: April 2020,  Other Special Inspection Date: July 2021,  Bridge Improvement Cost: $4,775,000,  Roadway Improvement Cost: $478,000,  Total Project Cost: $7,163,000 ( Estimate for 2022)

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Structure Number: B160074EGDOTNBI,  Location: CITY LINE BOS CAMB (Lat: 42.352619,  Lng: -71.110639),  Route carried "on" structure: Alternate State highway 2,  Year Built: 1928,  Status: Open,  Structure Length: 22.07m (72.41ft),  Average Daily Traffic: 37,370 (year 2020),  Truck Traffic: 2%,  Average Future Daily Traffic: 64,751 (year 2032),  Design Load: HS 20,  Features Intersected: COMB SOL FLD RD & RIV
Minimum Vertical Clearance: 4.27m (14.01ft),  Kilometerpoint: 0.016,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Steel,  Design/Construction: Arch - Thru,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 6,  Length of Maximum Span: 51.8m (169.9ft),  Curb or Sidewalk Widths: Left: 2.6m (8.5ft),  Right: 2.6m (8.5ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 19.2m (63.0ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Channel: Good,  Operating Rating: 55.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Underclear: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 22.10m (72.51ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: January 2022,  Critical Feature Inspection Date: January 2022,  Underwater Inspection Date: November 2018,  Bridge Improvement Cost: $16,668,000,  Roadway Improvement Cost: $1,667,000,  Total Project Cost: $25,003,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160094F0DOTNBI,  Location: .2 MI W OF BLOSSOM ST (Lat: 42.361525,  Lng: -71.075469),  Route carried "on" structure: State highway 3,  Year Built: 1905,  Year Reconstructed: 2018,  Status: Open,  Structure Length: 65.07m (213.48ft),  Average Daily Traffic: 29,100 (year 2018),  Truck Traffic: 5%,  Average Future Daily Traffic: 35,692 (year 2031),  Features Intersected: COMB ST3/ST28 & CHARLES
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 6,  Lanes under structure: 6,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 17.1m (56.1ft),  Skew: 30 degrees,  Navigation Control: Yes ( Vertical Clearance: 9.1m (29.9ft), Horizontal Clearance: 57.3m (188.0ft)),  Material/Design: Steel,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 11,  Number Of Approach Spans: 2,  Length of Maximum Span: 74.1m (243.1ft),  Curb or Sidewalk Widths: Left: 3.0m (9.8ft),  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 27.6m (90.6ft),  Out-to-Out Width: 32.5m (106.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 57.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 39.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: High priority of corrective action,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Meets minimum limits,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 58 months,  Inspection Date: September 2020,  Underwater Inspection Date: July 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160104EPDOTNBI,  Location: CITY LINE BOS CAMB (Lat: 42.364250,  Lng: -71.116903),  Route carried "on" structure: City street ,  Year Built: 1924,  Status: Open,  Structure Length: 8.53m (27.99ft),  Average Daily Traffic: 24,400 (year 2019),  Truck Traffic: 4%,  Average Future Daily Traffic: 47,379 (year 2032),  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: HWY WESTERN AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 3,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Navigation Control: Yes ( Vertical Clearance: 3.7m (12.1ft), Horizontal Clearance: 25.9m (85.0ft)),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 26.8m (87.9ft),  Curb or Sidewalk Widths: Left: 2.6m (8.5ft),  Right: 2.6m (8.5ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 18.3m (60.0ft)

Condition: Superstructure: Fair,  Substructure: Satisfactory,  Channel: Good,  Inventory Rating: 71.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 8.60m (28.22ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: November 2021,  Underwater Inspection Date: November 2018,  Bridge Improvement Cost: $6,182,000,  Roadway Improvement Cost: $619,000,  Total Project Cost: $9,274,000 ( Estimate for 2022)

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Structure Number: B160114F2DOTNBI,  Location: .4 MI E OF WESTERN AVE (Lat: 42.368964,  Lng: -71.123158),  Route carried "on" structure: City street ,  Year Built: 1912,  Year Reconstructed: 2012,  Status: Open,  Structure Length: 7.07m (23.20ft),  Average Daily Traffic: 30,400 (year 2019),  Truck Traffic: 9%,  Average Future Daily Traffic: 45,800 (year 2032),  Features Intersected: COMB CHARLES RV,  Facility Carried by Structure: HWY N HARVARD ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Navigation Control: Yes ( Vertical Clearance: 3.7m (12.1ft), Horizontal Clearance: 25.9m (85.0ft)),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 23.5m (77.1ft),  Curb or Sidewalk Widths: Left: 3.0m (9.8ft),  Right: 3.0m (9.8ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 19.3m (63.3ft)

Condition: Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Good,  Inventory Rating: 79.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 7.10m (23.29ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: November 2021,  Underwater Inspection Date: November 2018,  Bridge Improvement Cost: $6,628,000,  Roadway Improvement Cost: $663,000,  Total Project Cost: $9,943,000 ( Estimate for 2022)

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Structure Number: B160124EYDOTNBI,  Location: .8 MI E OF BU BRIDGE (Lat: 42.354389,  Lng: -71.091197),  Route carried "on" structure: Alternate State highway 2A,  Year Built: 1891,  Year Reconstructed: 1990,  Status: Open,  Structure Length: 66.18m (217.13ft),  Average Daily Traffic: 32,273 (year 2018),  Truck Traffic: 8%,  Average Future Daily Traffic: 77,386 (year 2032),  Design Load: HS 20,  Features Intersected: COMB STRW DR & CHAS RIV,  Facility Carried by Structure: ST 2 A/MASS AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.474,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 15.8m (51.8ft),  Navigation Control: Yes ( Vertical Clearance: 3.7m (12.1ft), Horizontal Clearance: 18.3m (60.0ft)),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 25,  Length of Maximum Span: 32.1m (105.3ft),  Curb or Sidewalk Widths: Left: 2.7m (8.9ft),  Right: 2.7m (8.9ft),  Curb-To-Curb Width: 15.8m (51.8ft),  Out-to-Out Width: 22.6m (74.1ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 78.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 47.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: High priority of corrective action,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 66.20m (217.19ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: May 2021,  Critical Feature Inspection Date: May 2021,  Underwater Inspection Date: September 2020,  Bridge Improvement Cost: $39,323,000,  Roadway Improvement Cost: $3,933,000,  Total Project Cost: $58,985,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Built-up,  Deck Protection: Epoxy Coated Reinforcing

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Structure Number: B160134EMDOTNBI,  Location: .1 MI NW OF NASHUA ST (Lat: 42.367153,  Lng: -71.069106),  Route carried "on" structure: State highway 28,  Year Built: 1910,  Year Reconstructed: 2011,  Status: Open,  Structure Length: 2.77m (9.09ft),  Average Daily Traffic: 43,250 (year 2017),  Truck Traffic: 4%,  Average Future Daily Traffic: 69,489 (year 2032),  Design Load: HS 25 or greater,  Features Intersected: WATER CHARLES RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 5,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 18.4m (60.4ft),  Skew: 30 degrees,  Navigation Control: Yes ( Vertical Clearance: 4.6m (15.1ft), Horizontal Clearance: 13.7m (44.9ft)),  Material/Design: Steel,  Design/Construction: Movable - Bascule,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 2,  Length of Maximum Span: 19.2m (63.0ft),  Curb or Sidewalk Widths: Left: 3.1m (10.2ft),  Right: 2.9m (9.5ft),  Curb-To-Curb Width: 18.4m (60.4ft),  Out-to-Out Width: 25.7m (84.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 68.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 49.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 2.80m (9.19ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: December 2021,  Critical Feature Inspection Date: December 2021,  Underwater Inspection Date: March 2021,  Bridge Improvement Cost: $1,954,000,  Roadway Improvement Cost: $196,000,  Total Project Cost: $2,932,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Other

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Structure Number: B160134ETDOTNBI,  Location: .2 MI NW OF NASHUA ST (Lat: 42.368614,  Lng: -71.071864),  Route carried "on" structure: US 3,  Year Built: 1906,  Year Reconstructed: 2011,  Status: Open,  Structure Length: 3.54m (11.61ft),  Average Daily Traffic: 61,200 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 78,175 (year 2031),  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: ST 28 CHAS R DM RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 6,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 20.1m (65.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 10,  Length of Maximum Span: 5.5m (18.0ft),  Curb or Sidewalk Widths: Left: 3.0m (9.8ft),  Right: 3.0m (9.8ft),  Curb-To-Curb Width: 19.8m (65.0ft),  Out-to-Out Width: 26.2m (86.0ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Poor,  Channel: Poor,  Operating Rating: 60.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 36.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.60m (11.81ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2020,  Underwater Inspection Date: May 2020,  Bridge Improvement Cost: $3,705,000,  Roadway Improvement Cost: $371,000,  Total Project Cost: $5,558,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160144F8DOTNBI,  Location: .1 MI N OF I 90 (Lat: 42.358983,  Lng: -71.161542),  Route carried "on" structure: US 20,  Year Built: 1915,  Status: Open,  Structure Length: 6.25m (20.51ft),  Average Daily Traffic: 26,500 (year 2019),  Truck Traffic: 2%,  Average Future Daily Traffic: 48,169 (year 2032),  Design Load: H 20,  Features Intersected: WATER CHARLES RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 241.422,  Lanes on structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 16.8m (55.1ft),  Skew: 2 degrees,  Navigation Control: Yes ( Vertical Clearance: 4.3m (14.1ft), Horizontal Clearance: 13.7m (44.9ft)),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 22.9m (75.1ft),  Curb or Sidewalk Widths: Left: 3.2m (10.5ft),  Right: 3.2m (10.5ft),  Curb-To-Curb Width: 16.5m (54.1ft),  Out-to-Out Width: 24.1m (79.1ft)

Condition: Superstructure: Fair,  Substructure: Fair,  Channel: Good,  Operating Rating: 91.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 54.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Meets minimum limits,  Length Of Structure Improvement: 6.30m (20.67ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: July 2021,  Underwater Inspection Date: September 2021,  Bridge Improvement Cost: $5,964,000,  Roadway Improvement Cost: $597,000,  Total Project Cost: $8,947,000 ( Estimate for 2022)

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Structure Number: B160154EFDOTNBI,  Location: CITY LINE WAT BOS (Lat: 42.361708,  Lng: -71.147244),  Route carried "on" structure: City street ,  Year Built: 1925,  Year Reconstructed: 1968,  Status: Open,  Structure Length: 6.19m (20.31ft),  Average Daily Traffic: 24,700 (year 2021),  Truck Traffic: 7%,  Average Future Daily Traffic: 63,172 (year 2032),  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: HWY ARSENAL ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 15.8m (51.8ft),  Skew: 24 degrees,  Navigation Control: Yes ( Vertical Clearance: 4.0m (13.1ft), Horizontal Clearance: 22.9m (75.1ft)),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 21.3m (69.9ft),  Curb or Sidewalk Widths: Left: 1.8m (5.9ft),  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 15.3m (50.2ft),  Out-to-Out Width: 19.5m (64.0ft)

Condition: Superstructure: Fair,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 83.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 38.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 6.20m (20.34ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: November 2021,  Underwater Inspection Date: November 2018,  Bridge Improvement Cost: $4,749,000,  Roadway Improvement Cost: $475,000,  Total Project Cost: $7,124,000 ( Estimate for 2022)

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Structure Number: B1601637HMUNNBI,  Location: AT CHAS RIV NR BOS GARDEN (Lat: 42.367797,  Lng: -71.059139),  Route carried "on" structure: City street ,  Year Built: 1900,  Year Reconstructed: 1956,  Status: Temporarily open,  Structure Length: 12.92m (42.39ft),  Average Daily Traffic: 43,300 (year 2016),  Truck Traffic: 10%,  Average Future Daily Traffic: 60,645 (year 2031),  Design Load: HS 20,  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: HWY N WSHNGTN ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.531,  Lanes on structure: 6,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 24.4m (80.1ft),  Skew: 20 degrees,  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 25.9m (85.0ft),  Curb or Sidewalk Widths: Left: 2.6m (8.5ft),  Right: 2.3m (7.5ft),  Curb-To-Curb Width: 22.6m (74.1ft),  Out-to-Out Width: 30.8m (101.0ft)

Condition: Deck: Fair,  Superstructure: Serious,  Substructure: Poor,  Channel: Fair,  Structural Evaluation: High priority of replacement,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 13.80m (45.28ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: September 2020,  Underwater Inspection Date: August 2018,  Bridge Improvement Cost: $25,951,000,  Roadway Improvement Cost: $2,596,000,  Total Project Cost: $38,927,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Other

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Structure Number: B1601637KMUNNBI,  Location: AT CHAS RIV NR BOS GARDEN (Lat: 42.368733,  Lng: -71.059800),  Route carried "on" structure: City street ,  Year Built: 1900,  Year Reconstructed: 1956,  Status: Temporarily open,  Structure Length: 7.35m (24.11ft),  Average Daily Traffic: 43,300 (year 2016),  Truck Traffic: 10%,  Average Future Daily Traffic: 60,645 (year 2031),  Design Load: HS 20,  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: HWY N WSHNGTN ST
Minimum Vertical Clearance: 4.85m (15.91ft),  Kilometerpoint: 0.660,  Lanes on structure: 6,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 24.4m (80.1ft),  Skew: 30 degrees,  Navigation Control: Yes ( Vertical Clearance: 7.0m (23.0ft), Horizontal Clearance: 15.2m (49.9ft)),  Material/Design: Steel continuous,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 36.3m (119.1ft),  Curb or Sidewalk Widths: Left: 3.0m (9.8ft),  Right: 2.8m (9.2ft),  Curb-To-Curb Width: 20.1m (65.9ft),  Out-to-Out Width: 30.8m (101.0ft)

Condition: Deck: Satisfactory,  Superstructure: Serious,  Substructure: Poor,  Channel: Fair,  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 8.40m (27.56ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: September 2020,  Underwater Inspection Date: August 2018,  Bridge Improvement Cost: $16,896,000,  Roadway Improvement Cost: $1,690,000,  Total Project Cost: $25,345,000 ( Estimate for 2022),  Deck Structure Type: Open Grating,  Wearing Surface/Protective System: Wearing Surface: Other

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Structure Number: B1601637MMUNNBI,  Location: AT CHAS RIV NR BOS GARDEN (Lat: 42.369478,  Lng: -71.060314),  Route carried "on" structure: City street ,  Year Built: 1900,  Year Reconstructed: 1956,  Status: Temporarily open,  Structure Length: 12.92m (42.39ft),  Average Daily Traffic: 43,300 (year 2016),  Truck Traffic: 10%,  Average Future Daily Traffic: 60,645 (year 2031),  Features Intersected: WATER CHARLES RIVER,  Facility Carried by Structure: HWY N WSHNGTN ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.740,  Lanes on structure: 6,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 24.4m (80.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 25.9m (85.0ft),  Curb or Sidewalk Widths: Left: 2.6m (8.5ft),  Right: 2.3m (7.5ft),  Curb-To-Curb Width: 24.4m (80.1ft),  Out-to-Out Width: 30.8m (101.0ft)

Condition: Deck: Poor,  Superstructure: Serious,  Substructure: Poor,  Channel: Fair,  Structural Evaluation: High priority of replacement,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 13.80m (45.28ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: September 2020,  Underwater Inspection Date: August 2018,  Bridge Improvement Cost: $24,649,000,  Roadway Improvement Cost: $2,465,000,  Total Project Cost: $36,974,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Other

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Structure Number: B1601637PMUNNBI,  Location: NEAR BOSTON GARDEN (Lat: 42.370483,  Lng: -71.061047),  Route carried "on" structure: City street ,  Year Built: 1900,  Year Reconstructed: 1992,  Status: Open,  Structure Length: 8.29m (27.20ft),  Average Daily Traffic: 43,600 (year 2020),  Truck Traffic: 6%,  Average Future Daily Traffic: 104,550 (year 2033),  Design Load: HS 20,  Features Intersected: OTHER WAREHOUSE,  Facility Carried by Structure: HWY N WSHNGTN ST
Minimum Vertical Clearance: 5.44m (17.85ft),  Kilometerpoint: 0.869,  Lanes on structure: 6,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 24.4m (80.1ft),  Skew: 21 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 5,  Number Of Approach Spans: 1,  Length of Maximum Span: 15.2m (49.9ft),  Curb or Sidewalk Widths: Left: 2.2m (7.2ft),  Right: 2.2m (7.2ft),  Curb-To-Curb Width: 24.7m (81.0ft),  Out-to-Out Width: 31.2m (102.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Operating Rating: 52.5 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 33.0 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 8.30m (27.23ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2020,  Bridge Improvement Cost: $2,348,000,  Roadway Improvement Cost: $235,000,  Total Project Cost: $3,523,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Built-up,  Deck Protection: Epoxy Coated Reinforcing

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Structure Number: B1601637RMUNNBI,  Location: NEAR BOSTON GARDEN (Lat: 42.370733,  Lng: -71.061317),  Route carried "on" structure: City street ,  Year Built: 1900,  Year Reconstructed: 1992,  Status: Open,  Structure Length: 1.83m (6.00ft),  Average Daily Traffic: 43,600 (year 2020),  Truck Traffic: 6%,  Average Future Daily Traffic: 101,707 (year 2033),  Design Load: HS 20,  Features Intersected: HWY WATER ST,  Facility Carried by Structure: HWY N WSHNGTN ST
Minimum Vertical Clearance: 9.14m (29.99ft),  Kilometerpoint: 0.982,  Lanes on structure: 6,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 32.3m (106.0ft),  Skew: 21 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 17.4m (57.1ft),  Curb or Sidewalk Widths: Left: 2.4m (7.9ft),  Right: 2.4m (7.9ft),  Curb-To-Curb Width: 33.5m (109.9ft),  Out-to-Out Width: 42.1m (138.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 51.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 1.90m (6.23ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2020,  Bridge Improvement Cost: $315,000,  Roadway Improvement Cost: $32,000,  Total Project Cost: $473,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Built-up,  Deck Protection: Epoxy Coated Reinforcing

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Structure Number: B160174WUDOTNBI,  Location: BOS APPR UP (Lat: 42.378572,  Lng: -71.053208),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 63.16m (207.22ft),  Average Daily Traffic: 33,373 (year 2018),  Truck Traffic: 10%,  Average Future Daily Traffic: 45,800 (year 2032),  Design Load: HS 20,  Features Intersected: US 1 NB/BOS LOWR B11-32
Minimum Vertical Clearance: 4.57m (14.99ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 21,  Number Of Approach Spans: 1,  Length of Maximum Span: 33.5m (109.9ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Operating Rating: 40.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 24.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 63.20m (207.35ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: September 2021,  Critical Feature Inspection Date: September 2021,  Bridge Improvement Cost: $31,528,000,  Roadway Improvement Cost: $3,153,000,  Total Project Cost: $47,293,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174WVDOTNBI,  Location: BOS APPR LOWER (Lat: 42.377417,  Lng: -71.054292),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 57.67m (189.21ft),  Average Daily Traffic: 41,951 (year 2018),  Truck Traffic: 5%,  Average Future Daily Traffic: 70,595 (year 2032),  Design Load: HS 20,  Features Intersected: HWY CHRLTWN LOCAL STS
Minimum Vertical Clearance: 4.88m (16.01ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 4,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 19,  Length of Maximum Span: 33.5m (109.9ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Operating Rating: 32.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 19.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Underclear: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Length Of Structure Improvement: 57.70m (189.30ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: September 2021,  Critical Feature Inspection Date: September 2021,  Bridge Improvement Cost: $28,784,000,  Roadway Improvement Cost: $2,879,000,  Total Project Cost: $43,177,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174WWDOTNBI,  Location: L MYSTIC LOWER (Lat: 42.380175,  Lng: -71.051717),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 13.38m (43.90ft),  Average Daily Traffic: 41,951 (year 2018),  Truck Traffic: 7%,  Average Future Daily Traffic: 70,595 (year 2032),  Design Load: HS 20,  Features Intersected: HWY CHELSEA STREET
Minimum Vertical Clearance: 4.90m (16.08ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 2,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Navigation Control: Yes ( Vertical Clearance: 30.5m (100.1ft), Horizontal Clearance: 121.9m (399.9ft)),  Material/Design: Steel,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 133.8m (439.0ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 45.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 27.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 13.40m (43.96ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: September 2021,  Critical Feature Inspection Date: September 2021,  Bridge Improvement Cost: $6,685,000,  Roadway Improvement Cost: $669,000,  Total Project Cost: $10,028,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174WXDOTNBI,  Location: L MYSTIC UP (Lat: 42.380175,  Lng: -71.051717),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 13.38m (43.90ft),  Average Daily Traffic: 33,373 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 45,800 (year 2032),  Design Load: HS 20,  Features Intersected: US 1 NB/LIT MYSTIC LOWR
Minimum Vertical Clearance: 4.90m (16.08ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 133.8m (439.0ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 43.8 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 27.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 13.40m (43.96ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: September 2021,  Critical Feature Inspection Date: September 2021,  Bridge Improvement Cost: $6,685,000,  Roadway Improvement Cost: $669,000,  Total Project Cost: $10,028,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174WYDOTNBI,  Location: CHEL APPR LOW (Lat: 42.390056,  Lng: -71.041742),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 86.23m (282.91ft),  Average Daily Traffic: 41,951 (year 2018),  Truck Traffic: 7%,  Average Future Daily Traffic: 70,595 (year 2032),  Design Load: HS 20,  Features Intersected: HWY CHELSEA LOCAL STRE
Minimum Vertical Clearance: 4.88m (16.01ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 2,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 30,  Length of Maximum Span: 31.4m (103.0ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Fair,  Superstructure: Poor,  Substructure: Fair,  Operating Rating: 18.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 10.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of replacement,  Underclear: High priority of replacement,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 86.30m (283.14ft),  Designated Inspection Frequency: Every 12 months,  Critical Feature Inspection Frequency: Every 24 months,  Other Special Inspection Frequency: Every 12 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: November 2021,  Other Special Inspection Date: November 2021,  Bridge Improvement Cost: $90,860,000,  Roadway Improvement Cost: $9,087,000,  Total Project Cost: $136,291,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174X0DOTNBI,  Location: CHEL APPR UP (Lat: 42.390483,  Lng: -71.041019),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 102.08m (334.91ft),  Average Daily Traffic: 33,373 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 45,800 (year 2032),  Design Load: HS 20,  Features Intersected: US 1 NB/CHEL LWR DECK
Minimum Vertical Clearance: 4.57m (14.99ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 36,  Length of Maximum Span: 31.4m (103.0ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Fair,  Superstructure: Poor,  Substructure: Fair,  Operating Rating: 34.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 20.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Underclear: High priority of replacement,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 102.10m (334.97ft),  Designated Inspection Frequency: Every 12 months,  Critical Feature Inspection Frequency: Every 24 months,  Other Special Inspection Frequency: Every 12 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: November 2021,  Other Special Inspection Date: November 2021,  Bridge Improvement Cost: $107,495,000,  Roadway Improvement Cost: $10,750,000,  Total Project Cost: $161,243,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174X1DOTNBI,  Location: TOLL PL LOWER (Lat: 42.381903,  Lng: -71.050161),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 32.67m (107.19ft),  Average Daily Traffic: 41,951 (year 2018),  Truck Traffic: 7%,  Average Future Daily Traffic: 70,595 (year 2032),  Design Load: HS 20,  Features Intersected: OTHER RELIEF
Minimum Vertical Clearance: 4.90m (16.08ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 12,  Length of Maximum Span: 35.4m (116.1ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Fair,  Operating Rating: 35.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 22.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 32.70m (107.28ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: November 2021,  Bridge Improvement Cost: $16,313,000,  Roadway Improvement Cost: $1,632,000,  Total Project Cost: $24,470,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174X2DOTNBI,  Location: TOLL PL UPPER (Lat: 42.381903,  Lng: -71.050161),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 32.67m (107.19ft),  Average Daily Traffic: 33,373 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 45,800 (year 2032),  Design Load: HS 20,  Features Intersected: US 1 NB/TOLL PLAZA LOWR
Minimum Vertical Clearance: 4.90m (16.08ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 12,  Length of Maximum Span: 35.4m (116.1ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Operating Rating: 36.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 32.70m (107.28ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: November 2021,  Bridge Improvement Cost: $16,313,000,  Roadway Improvement Cost: $1,632,000,  Total Project Cost: $24,470,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174X3DOTNBI,  Location: BIG MYS LOWER (Lat: 42.385103,  Lng: -71.047286),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 46.45m (152.40ft),  Average Daily Traffic: 41,951 (year 2018),  Truck Traffic: 7%,  Average Future Daily Traffic: 70,595 (year 2032),  Design Load: HS 20,  Features Intersected: WATER MYSTIC RIVER
Minimum Vertical Clearance: 4.88m (16.01ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Navigation Control: Yes ( Vertical Clearance: 41.1m (134.8ft), Horizontal Clearance: 213.4m (700.1ft)),  Material/Design: Steel continuous,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 244.1m (800.9ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Fair,  Channel: Good,  Operating Rating: 36.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 46.50m (152.56ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: November 2021,  Underwater Inspection Date: July 2020,  Bridge Improvement Cost: $23,197,000,  Roadway Improvement Cost: $2,320,000,  Total Project Cost: $34,796,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B160174X4DOTNBI,  Location: BIG MYSTIC UPPER (Lat: 42.385103,  Lng: -71.047286),  Route carried "on" structure: US 1,  Year Built: 1950,  Status: Open,  Structure Length: 46.45m (152.40ft),  Average Daily Traffic: 33,373 (year 2018),  Truck Traffic: 9%,  Average Future Daily Traffic: 45,800 (year 2032),  Design Load: HS 20,  Features Intersected: US 1 NB/BIG MYSTIC LOWR
Minimum Vertical Clearance: 4.57m (14.99ft),  Kilometerpoint: 67.269,  Lanes on structure: 3,  Lanes under structure: 3,  Base Highway Network: Yes,  Toll: Toll bridge,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Steel continuous,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 244.1m (800.9ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.7m (41.7ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Fair,  Channel: Good,  Operating Rating: 36.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 46.50m (152.56ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: November 2021,  Underwater Inspection Date: July 2020,  Bridge Improvement Cost: $23,197,000,  Roadway Improvement Cost: $2,320,000,  Total Project Cost: $34,796,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: B16018397DOTNBI,  Location: .32 KM W OF JCT BEACON&2A (Lat: 42.350061,  Lng: -71.092472),  Route carried "on" structure: Other road ,  Year Built: 1900,  Year Reconstructed: 1982,  Status: Open,  Structure Length: 1.65m (5.41ft),  Average Daily Traffic: 15,900 (year 2018),  Truck Traffic: 13%,  Average Future Daily Traffic: 38,693 (year 2031),  Design Load: HS 20+Mod,  Features Intersected: WATER MUDDY RIVER,  Facility Carried by Structure: HWY BEACON ST
Minimum Vertical Clearance: 5.16m (16.93ft),  Kilometerpoint: 1.223,  Lanes on structure: 3,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 14.0m (45.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 8.2m (26.9ft),  Curb or Sidewalk Widths: Left: 3.2m (10.5ft),  Right: 3.2m (10.5ft),  Curb-To-Curb Width: 14.1m (46.3ft),  Out-to-Out Width: 21.6m (70.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 74.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 43.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 1.70m (5.58ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: March 2020,  Underwater Inspection Date: January 2022,  Bridge Improvement Cost: $1,443,000,  Roadway Improvement Cost: $145,000,  Total Project Cost: $2,165,000 ( Estimate for 2022),  Deck Structure Type: Concrete Precast Panels,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric

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Structure Number: B16019383MUNNBI,  Location: @ CHELSEA TL = C09005 (Lat: 42.385658,  Lng: -71.039303),  Route carried "on" structure: City street ,  Year Built: 1954,  Year Reconstructed: 2002,  Status: Posted for load,  Structure Length: 32.77m (107.51ft),  Average Daily Traffic: 22,435 (year 2018),  Truck Traffic: 6%,  Average Future Daily Traffic: 37,271 (year 2031),  Design Load: H 20,  Features Intersected: WATER CHELSEA RIVER,  Facility Carried by Structure: HWY MERIDIAN ST
Minimum Vertical Clearance: 5.26m (17.26ft),  Kilometerpoint: 1.513,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Navigation Control: Yes ( Vertical Clearance: 6.4m (21.0ft), Horizontal Clearance: 53.3m (174.9ft)),  Material/Design: Steel,  Design/Construction: Movable - Bascule,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 12,  Length of Maximum Span: 68.6m (225.1ft),  Curb or Sidewalk Widths: Left: 1.9m (6.2ft),  Right: 1.9m (6.2ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.4m (44.0ft)

Condition: Deck: Fair,  Superstructure: Poor,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 7.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 4.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of replacement,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 32.80m (107.61ft),  Designated Inspection Frequency: Every 12 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Other Special Inspection Frequency: Every 12 months,  Inspection Date: November 2020,  Critical Feature Inspection Date: November 2020,  Underwater Inspection Date: September 2021,  Other Special Inspection Date: November 2021,  Bridge Improvement Cost: $25,084,000,  Roadway Improvement Cost: $2,509,000,  Total Project Cost: $37,627,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric

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Structure Number: B16020B4JDOTNBI,  Location: AT CHELSEA RIVER (Lat: 42.386203,  Lng: -71.022667),  Route carried "on" structure: City street ,  Year Built: 2012,  Status: Open,  Structure Length: 14.59m (47.87ft),  Average Daily Traffic: 13,400 (year 2019),  Truck Traffic: 6%,  Design Load: HS 20,  Features Intersected: WATER CHELSEA RIVER,  Facility Carried by Structure: HWY CHELSEA ST
Minimum Vertical Clearance: 7.23m (23.72ft),  Kilometerpoint: 0.000,  Lanes on structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 15.2m (49.9ft),  Navigation Control: Yes ( Vertical Clearance: 2.1m (6.9ft), Horizontal Clearance: 67.1m (220.1ft)),  Material/Design: Steel,  Design/Construction: Movable - Lift,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 137.1m (449.8ft),  Curb or Sidewalk Widths: Left: 1.8m (5.9ft),  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 15.2m (49.9ft),  Out-to-Out Width: 16.4m (53.8ft)

Condition: Deck: Very good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 58.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 35.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Length Of Structure Improvement: 14.60m (47.90ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Critical Feature Inspection Date: June 2021,  Bridge Improvement Cost: $9,444,000,  Roadway Improvement Cost: $945,000,  Total Project Cost: $14,167,000 ( Estimate for 2022),  Deck Structure Type: Closed Grating,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing

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Structure Number: B160214F4DOTNBI,  Location: .48 KM S OF WOODHAVEN ST (Lat: 42.267100,  Lng: -71.093828),  Route carried "on" structure: State highway 28,  Year Built: 1903,  Year Reconstructed: 1946,  Status: Open,  Structure Length: 3.35m (10.99ft),  Average Daily Traffic: 63,800 (year 2018),  Truck Traffic: 7%,  Average Future Daily Traffic: 86,862 (year 2031),  Design Load: H 15,  Features Intersected: WATER NEPONSET RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 7,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 26.8m (87.9ft),  Skew: 20 degrees,  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 15.2m (49.9ft),  Curb or Sidewalk Widths: Left: 2.4m (7.9ft),  Right: 2.4m (7.9ft),  Curb-To-Curb Width: 26.8m (87.9ft),  Out-to-Out Width: 36.0m (118.1ft)

Condition: Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Inventory Rating: 92.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Meets minimum limits,  Length Of Structure Improvement: 3.40m (11.15ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2020,  Bridge Improvement Cost: $4,808,000,  Roadway Improvement Cost: $481,000,  Total Project Cost: $7,213,000 ( Estimate for 2022)

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Structure Number: B160223A3DOTNBI,  Location: MILTON TOWN LINE (Lat: 42.277481,  Lng: -71.053297),  Route carried "on" structure: Other road ,  Year Built: 1959,  Status: Posted for load,  Structure Length: 5.70m (18.70ft),  Average Daily Traffic: 47,600 (year 2019),  Truck Traffic: 6%,  Average Future Daily Traffic: 56,855 (year 2032),  Design Load: H 20,  Features Intersected: WATER NEPONSET RIVER,  Facility Carried by Structure: HWY GRANITE AVE
Minimum Vertical Clearance: 4.27m (14.01ft),  Kilometerpoint: 0.000,  Lanes on structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Navigation Control: Yes ( Vertical Clearance: 1.8m (5.9ft), Horizontal Clearance: 15.5m (50.9ft)),  Material/Design: Steel,  Design/Construction: Movable - Bascule,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 3,  Length of Maximum Span: 19.8m (65.0ft),  Curb or Sidewalk Widths: Left: 2.1m (6.9ft),  Right: 2.1m (6.9ft),  Curb-To-Curb Width: 14.6m (47.9ft),  Out-to-Out Width: 15.5m (50.9ft)

Condition: Deck: Fair,  Superstructure: Poor,  Substructure: Fair,  Channel: Fair,  Operating Rating: 14.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 8.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 6.80m (22.31ft),  Designated Inspection Frequency: Every 12 months,  Critical Feature Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Other Special Inspection Frequency: Every 12 months,  Inspection Date: May 2021,  Critical Feature Inspection Date: May 2021,  Underwater Inspection Date: August 2019,  Other Special Inspection Date: May 2021,  Bridge Improvement Cost: $8,193,000,  Roadway Improvement Cost: $820,000,  Total Project Cost: $12,290,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Other

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Structure Number: B16024385MUNNBI,  Location: AT RIV & MILTON LINE (Lat: 42.270289,  Lng: -71.073261),  Route carried "on" structure: City street ,  Year Built: 1973,  Status: Open,  Structure Length: 3.02m (9.91ft),  Average Daily Traffic: 8,500 (year 2019),  Truck Traffic: 5%,  Average Future Daily Traffic: 25,269 (year 2032),  Design Load: H 20,  Features Intersected: WATER NEPONSET RIVER,  Facility Carried by Structure: HWY CENTRAL AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.016,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 28.7m (94.2ft),  Curb or Sidewalk Widths: Left: 1.9m (6.2ft),  Right: 1.9m (6.2ft),  Curb-To-Curb Width: 13.4m (44.0ft),  Out-to-Out Width: 18.3m (60.0ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 61.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 37.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.10m (10.17ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: March 2021,  Underwater Inspection Date: December 2021,  Bridge Improvement Cost: $446,000,  Roadway Improvement Cost: $45,000,  Total Project Cost: $670,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Other

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Structure Number: B16025386MUNNBI,  Location: JUST NW OF TRUMAN HWY (Lat: 42.253139,  Lng: -71.118917),  Route carried "on" structure: City street ,  Year Built: 1907,  Year Reconstructed: 1973,  Status: Open,  Structure Length: 2.16m (7.09ft),  Average Daily Traffic: 25,603 (year 2019),  Truck Traffic: 8%,  Average Future Daily Traffic: 29,849 (year 2032),  Features Intersected: WATER NEPONSET RIVER,  Facility Carried by Structure: HWY FAIRMOUNT AV
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.901,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 10.7m (35.1ft),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 21.6m (70.9ft),  Curb or Sidewalk Widths: Left: 1.8m (5.9ft),  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 10.6m (34.8ft),  Out-to-Out Width: 15.2m (49.9ft)

Condition: Superstructure: Fair,  Substructure: Satisfactory,  Channel: Good,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.20m (7.22ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 36 months,  Inspection Date: May 2021,  Underwater Inspection Date: June 2021,  Bridge Improvement Cost: $1,314,000,  Roadway Improvement Cost: $132,000,  Total Project Cost: $1,972,000 ( Estimate for 2022),  Wearing Surface/Protective System: Wearing Surface: Bituminous