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Bridge Statistics for Amherst, New Hampshire (NH)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 23Number of bridges
  • 135ft / 40.9mTotal length
  • $56,556,000Total costs
  • 134,212Total average daily traffic
  • 7,966Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Amherst
  • No street view available for this location

New bridges in Amherst, NH - historical statistics
  • New bridges - historical statistics
  • 11930-1939
  • 11940-1949
  • 11950-1959
  • 81960-1969
  • 61970-1979
  • 41980-1989
  • 22010-2019
Reconstructed bridges in Amherst, NH - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11960-1969
  • 01970-1979
  • 01980-1989
  • 11990-1999
  • 32000-2009
Average Bridge Daily Traffic in Amherst, NH
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 7.1%Excellent
  • 7.1%Very good
  • 57.1%Good
  • 21.4%Satisfactory
  • 7.1%Serious
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 7.1%Excellent
  • 14.3%Very good
  • 42.9%Good
  • 28.6%Satisfactory
  • 7.1%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 7.1%Excellent
  • 14.3%Very good
  • 57.1%Good
  • 21.4%Satisfactory
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 14.3%Very good
  • 71.4%Good
  • 7.1%Satisfactory
  • 7.1%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 25.0%Satisfactory
  • 50.0%Fair
  • 25.0%Serious
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Structure Number: 7006000158,  Location: 0.1 MI BEDFORD TL (Lat: 42.923958,  Lng: -71.580128),  Route carried "on" structure: Other road ,  Year Built: 2018,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 624 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 923 (year 2042),  Design Load: HL 93,  Features Intersected: PULPIT BROOK,  Facility Carried by Structure: HORACE GREELEY RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.843,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 7.9m (25.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Excellent,  Superstructure: Excellent,  Substructure: Excellent,  Channel: Very good,  Operating Rating: 73.8 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 57.2 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Superior to present desirable criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 1.37m (4.49ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7006300118,  Location: 1.4 MI FR DODGE/AUSTIN R (Lat: 42.917547,  Lng: -71.617039),  Route carried "on" structure: Other road ,  Year Built: 1985,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 168 (year 2020),  Average Future Daily Traffic: 248 (year 2042),  Features Intersected: JOE ENGLISH BROOK,  Facility Carried by Structure: BROOK ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.195,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 4.9m (16.1ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Satisfactory,  Culverts: Fair,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 83.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 0.76m (2.49ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022)
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Structure Number: 7008700129,  Location: 2.2 MI BEDFORD TL (Lat: 42.901456,  Lng: -71.602586),  Route carried "on" structure: Other road ,  Year Built: 1989,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 1,784 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 2,640 (year 2042),  Design Load: HS 25 or greater,  Features Intersected: JOE ENGLISH BROOK,  Facility Carried by Structure: HORACE GREELEY RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.594,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.6m (38.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 78.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 47.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.37m (4.49ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7009300139,  Location: 1.15 MI SW BEDFORD TL (Lat: 42.898383,  Lng: -71.592789),  Route carried "on" structure: State highway 101,  Year Built: 1936,  Year Reconstructed: 1960,  Status: Open,  Structure Length: 0.67m (2.20ft),  Average Daily Traffic: 15,487 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 22,920 (year 2042),  Features Intersected: JOE ENGLISH BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 73.750,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.1m (20.0ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.1m (43.0ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 41.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 24.7 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: Equal to present desirable criteria,  Length Of Structure Improvement: 0.67m (2.20ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 7012400087,  Location: 1.6 MI MONT VERNON TL (Lat: 42.870469,  Lng: -71.636167),  Route carried "on" structure: Other road ,  Year Built: 1970,  Status: Open,  Structure Length: 0.61m (2.00ft),  Average Daily Traffic: 2,121 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 3,139 (year 2042),  Features Intersected: BEAVER BROOK,  Facility Carried by Structure: BOSTON POST ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.497,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 2.4m (7.9ft)

Condition: Channel: Good,  Culverts: Fair,  Operating Rating: 74.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 44.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 0.61m (2.00ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022)
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Structure Number: 70134001,  Location: 0.5 MI JCT 101 (Lat: 42.866461,  Lng: -71.623469),  Route carried "on" structure: Other road ,  Year Built: 2015,  Status: Open,  Structure Length: 1.36m (4.46ft),  Average Daily Traffic: 875 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 1,295 (year 2042),  Design Load: HL 93,  Features Intersected: BEAVER BROOK,  Facility Carried by Structure: MANCHESTER ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.243,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Material/Design: Prestressed concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 13.4m (44.0ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 1.7m (5.6ft),  Curb-To-Curb Width: 7.7m (25.3ft),  Out-to-Out Width: 11.7m (38.4ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 81.8 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 1.36m (4.46ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7013500109,  Location: 2.8 MI MILFORD TL (Lat: 42.866133,  Lng: -71.613625),  Route carried "on" structure: State highway ,  Year Built: 1969,  Status: Open,  Structure Length: 2.77m (9.09ft),  Average Daily Traffic: 6,130 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 9,072 (year 2042),  Design Load: HS 20,  Features Intersected: NH101,  Facility Carried by Structure: NH122,MAIN ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 20.300,  Lanes on structure: 2,  Lanes under structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.8m (42.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 26.5m (86.9ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 13.0m (42.7ft),  Out-to-Out Width: 14.3m (46.9ft)

Condition: Deck: Serious,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Operating Rating: 25.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 15.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of replacement,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.77m (9.09ft),  Designated Inspection Frequency: Every 8 months,  Inspection Date: November 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7013700104,  Location: 2.15 MI NE MILFORD TL (Lat: 42.862011,  Lng: -71.619444),  Route carried "on" structure: State highway ,  Year Built: 1940,  Status: Open,  Structure Length: 0.70m (2.30ft),  Average Daily Traffic: 6,130 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 9,072 (year 2042),  Design Load: H 15,  Features Intersected: BEAVER BROOK,  Facility Carried by Structure: NH122,AMHERST ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 19.579,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.1m (20.0ft)

Condition: Channel: Good,  Culverts: Satisfactory,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 0.70m (2.30ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022)
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Structure Number: 7014500106,  Location: 3.2 MI FR MERRIMACK TL (Lat: 42.858917,  Lng: -71.616281),  Route carried "on" structure: Other road ,  Year Built: 1970,  Status: Open,  Structure Length: 0.61m (2.00ft),  Average Daily Traffic: 344 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 509 (year 2042),  Features Intersected: BEAVER BROOK,  Facility Carried by Structure: THORNTONS FERRY RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.853,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 2.7m (8.9ft)

Condition: Channel: Fair,  Culverts: Serious,  Operating Rating: 73.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 44.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 0.61m (2.00ft),  Designated Inspection Frequency: Every 16 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022)
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Structure Number: 701460011,  Location: 2.3 MI MILFORD TL (Lat: 42.858103,  Lng: -71.611517),  Route carried "on" structure: State highway 101,  Year Built: 1971,  Status: Open,  Structure Length: 2.56m (8.40ft),  Average Daily Traffic: 12,483 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 18,474 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: THORNTONS FERRY ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 68.247,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State 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: 24.4m (80.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 13.1m (43.0ft),  Out-to-Out Width: 14.3m (46.9ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Good,  Operating Rating: 40.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 24.0 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,  Underclear: High priority of replacement,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.56m (8.40ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7015900107,  Location: 1.56 MI MILFORD TL (Lat: 42.848075,  Lng: -71.613600),  Route carried "on" structure: State highway 101,  Year Built: 1969,  Year Reconstructed: 2011,  Status: Open,  Structure Length: 4.15m (13.62ft),  Average Daily Traffic: 12,483 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 18,474 (year 2042),  Design Load: HS 20,  Features Intersected: BOSTON POST RD,BEAVER BK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 67.068,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.8m (42.0ft),  Skew: 2 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 20.1m (65.9ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 12.8m (42.0ft),  Out-to-Out Width: 14.3m (46.9ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 51.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 30.6 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,  Underclear: High priority of replacement,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 4.15m (13.62ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7016000105,  Location: .06 MI FR NH RTE 122 (Lat: 42.849217,  Lng: -71.615475),  Route carried "on" structure: Other road ,  Year Built: 1984,  Status: Open,  Structure Length: 1.10m (3.61ft),  Average Daily Traffic: 2,562 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 3,791 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: BEAVER BROOK,  Facility Carried by Structure: BOSTON POST ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.967,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Frame,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 4.6m (15.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.4m (44.0ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 54.3 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 36.3 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  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 minimum criteria,  Length Of Structure Improvement: 1.10m (3.61ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7016500104,  Location: 1.3 MI MILFORD TL (Lat: 42.845319,  Lng: -71.615483),  Route carried "on" structure: State highway 101,  Year Built: 1969,  Year Reconstructed: 2011,  Status: Open,  Structure Length: 5.27m (17.29ft),  Average Daily Traffic: 12,483 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 18,474 (year 2042),  Design Load: HS 20,  Features Intersected: NH122
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 66.731,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.8m (42.0ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 20.1m (65.9ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 12.8m (42.0ft),  Out-to-Out Width: 14.0m (45.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 51.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 30.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 5.27m (17.29ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7017500099,  Location: 0.7 MI MILFORD TL (Lat: 42.836603,  Lng: -71.619003),  Route carried "on" structure: State highway 101,  Year Built: 1969,  Year Reconstructed: 2011,  Status: Open,  Structure Length: 2.19m (7.19ft),  Average Daily Traffic: 12,745 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 18,862 (year 2042),  Design Load: HS 20,  Features Intersected: MERRIMACK ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 65.695,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 12.8m (42.0ft),  Skew: 2 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 20.7m (67.9ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 13.1m (43.0ft),  Out-to-Out Width: 14.0m (45.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 51.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 30.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.19m (7.19ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7017700108,  Location: 0.5 MI NH 101 (Lat: 42.835875,  Lng: -71.609569),  Route carried "on" structure: Other road ,  Year Built: 1986,  Status: Open,  Structure Length: 1.04m (3.41ft),  Average Daily Traffic: 1,470 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 2,175 (year 2042),  Design Load: HS 20,  Features Intersected: BEAVER BROOK,  Facility Carried by Structure: MERRIMACK ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.342,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete continuous,  Design/Construction: Frame,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 4.6m (15.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.4m (34.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Very good,  Channel: Good,  Operating Rating: 49.0 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.04m (3.41ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7018600107,  Location: 2.35 MI N HOLLIS TL (Lat: 42.829378,  Lng: -71.609650),  Route carried "on" structure: State highway 122,  Year Built: 1956,  Year Reconstructed: 1996,  Status: Open,  Structure Length: 4.33m (14.21ft),  Average Daily Traffic: 5,782 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 8,557 (year 2042),  Design Load: HS 20,  Features Intersected: SOUHEGAN RIVER,REC PATH
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 15.147,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 14.6m (47.9ft),  Curb-To-Curb Width: 9.4m (30.8ft),  Out-to-Out Width: 10.7m (35.1ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Channel: Good,  Operating Rating: 72.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 43.5 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: Equal to present desirable criteria,  Length Of Structure Improvement: 4.33m (14.21ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: June 2021,  Underwater Inspection Date: August 2017,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7018800097,  Location: 0.04 MI MILFORD TL (Lat: 42.826983,  Lng: -71.617056),  Route carried "on" structure: State highway 101,  Year Built: 1971,  Status: Open,  Structure Length: 7.32m (24.02ft),  Average Daily Traffic: 12,745 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 18,862 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: SOUHEGAN RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 64.617,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 36.3m (119.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 13.3m (43.6ft),  Out-to-Out Width: 14.6m (47.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 47.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 31.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 7.32m (24.02ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 701930013,  Location: 1.9 MI MERRIMACK TL (Lat: 42.827247,  Lng: -71.585236),  Route carried "on" structure: Other road ,  Year Built: 1977,  Status: Open,  Structure Length: 2.68m (8.79ft),  Average Daily Traffic: 4,166 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 6,165 (year 2042),  Features Intersected: SOUHEGAN RIVER,  Facility Carried by Structure: BOSTON POST ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.109,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.4m (21.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 25.3m (83.0ft),  Curb or Sidewalk Widths: Left: 1.2m (3.9ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 9.4m (30.8ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 45.7 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Equal to present minimum criteria,  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: 2.68m (8.79ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( 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: 7013500109,  Location: 2.8 MI MILFORD TL (Lat: 42.866133,  Lng: -71.613625),  Route carried "under" structure: State highway 101,  Year Built: 1969,  Structure Length: 0. m,  Average Daily Traffic: 13,000 (year 2014),  Truck Traffic: 7%,  Features Intersected: NH101,  Facility Carried by Structure: NH122,MAIN ST
Minimum Vertical Clearance: 5.00m (16.40ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 2,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 26.5m (86.9ft)

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Structure Number: 701460011,  Location: 2.3 MI MILFORD TL (Lat: 42.858103,  Lng: -71.611517),  Route carried "under" structure: City street ,  Year Built: 1971,  Structure Length: 0. m,  Average Daily Traffic: 530 (year 2013),  Truck Traffic: 2%,  Features Intersected: THORNTONS FERRY ROAD,  Facility Carried by Structure: NH101
Minimum Vertical Clearance: 4.34m (14.24ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 2,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 24.4m (80.1ft)

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Structure Number: 7015900107,  Location: 1.56 MI MILFORD TL (Lat: 42.848075,  Lng: -71.613600),  Route carried "under" structure: City street ,  Year Built: 1969,  Structure Length: 0. m,  Average Daily Traffic: 3,800 (year 2013),  Features Intersected: BOSTON POST RD,BEAVER BK,  Facility Carried by Structure: NH101
Minimum Vertical Clearance: 4.14m (13.58ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 2,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.1m (65.9ft)

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Structure Number: 7016500104,  Location: 1.3 MI MILFORD TL (Lat: 42.845319,  Lng: -71.615483),  Route carried "under" structure: State highway 122,  Year Built: 1969,  Structure Length: 0. m,  Average Daily Traffic: 4,600 (year 2014),  Truck Traffic: 2%,  Features Intersected: NH122,  Facility Carried by Structure: NH101
Minimum Vertical Clearance: 5.33m (17.49ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 2,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.1m (65.9ft)

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Structure Number: 7017500099,  Location: 0.7 MI MILFORD TL (Lat: 42.836603,  Lng: -71.619003),  Route carried "under" structure: City street ,  Year Built: 1969,  Structure Length: 0. m,  Average Daily Traffic: 1,700 (year 2012),  Truck Traffic: 2%,  Features Intersected: MERRIMACK ROAD,  Facility Carried by Structure: NH101
Minimum Vertical Clearance: 4.47m (14.67ft),  Kilometerpoint: 3.219,  Lanes on structure: 2,  Lanes under structure: 2,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.7m (67.9ft)

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