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Bridge Statistics for Underhill, Vermont (VT) - Condition, Traffic, Stress, Structural Evaluation, Project Costs

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National Bridge Inventory (NBI) Statistics
Number of bridges: 10
Total length: 14 meters (46ft)
Total costs: $6,538,000
Total average daily traffic: 17,375
Total average daily truck traffic: 1,371
Total future (year 2015) average daily traffic: 26,062
National Bridge Inventory (NBI) Registered Bridges for Underhill

New bridges - Historical Statistics

  • 1920-1929: 1
  • 1930-1939: 3
  • 1940-1949: 0
  • 1950-1959: 1
  • 1960-1969: 0
  • 1970-1979: 0
  • 1980-1989: 0
  • 1990-1999: 4
  • 2000-2009: 1

Reconstructed bridges - Historical Statistics

  • 1960-1969: 1
  • 1970-1979: 0
  • 1980-1989: 0
  • 1990-1999: 1

Average Daily Traffic

Bridge Condition - Deck

Bridge Condition - Superstructure

Bridge Condition - Substructure

Bridge Condition - Channel

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Structure Number: 100415002704151,  Location: 0.15 MI TO JCT W CL3 TH3 (Lat: 44.541667,  Lng: -72.935556),  Route carried "on" structure: Other road C3033,  Year Built: 1937,  Year Reconstructed: 1998,  Status: Open,  Structure Length: 1.62m (5.31ft),  Average Daily Traffic: 50 (year 1999),  Truck Traffic: 2%,  Average Future Daily Traffic: 75 (year 2019),  Design Load: HS 25,  Features Intersected: ROARING BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 4.9m (16.1ft),  Skew: 3 degrees,  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.9m (48.9ft),  Curb-To-Curb Width: 4.5m (14.8ft),  Out-to-Out Width: 5.2m (17.1ft)

Condition: Deck: Satisfactory,  Superstructure: Very good,  Substructure: Satisfactory,  Channel: Fair,  Operating Rating: 54.0 metric tons,  Inventory Rating: 32.4 metric tons,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 2.26m (7.41ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Bridge Improvement Cost: $376,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $526,000 ( Estimate for 2007),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Wood or Timber,  Deck Protection: Internally Sealed
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Structure Number: 100415002904151,  Location: 0.01 MI E JCT W TH1 (Lat: 44.508889,  Lng: -72.892222),  Route carried "on" structure: Other road C3037,  Year Built: 1998,  Status: Open,  Structure Length: 1.25m (4.10ft),  Average Daily Traffic: 80 (year 1999),  Truck Traffic: 2%,  Average Future Daily Traffic: 120 (year 2019),  Design Load: HS 25,  Features Intersected: BROWNS RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Skew: 1 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.9m (39.0ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 6.3m (20.7ft),  Out-to-Out Width: 7.1m (23.3ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Satisfactory,  Operating Rating: 81.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 48.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.01m (6.59ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Bridge Improvement Cost: $452,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $602,000 ( Estimate for 2007),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 100415003104151,  Location: 0.12 MI TO JCT CL2 TH1 (Lat: 44.506667,  Lng: -72.899722),  Route carried "on" structure: Other road C3048,  Year Built: 1990,  Status: Posted for load,  Structure Length: 1.25m (4.10ft),  Average Daily Traffic: 10 (year 1999),  Truck Traffic: 2%,  Average Future Daily Traffic: 15 (year 2019),  Features Intersected: BROOK,  Facility Carried by Structure: C3057
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 4.3m (14.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.9m (39.0ft),  Curb-To-Curb Width: 3.8m (12.5ft),  Out-to-Out Width: 4.2m (13.8ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 9.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 7.2 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum 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: 2.01m (6.59ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Bridge Improvement Cost: $270,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $420,000 ( Estimate for 2007),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Wood or Timber,  Deck Protection: Internally Sealed
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Structure Number: 100415003704151,  Location: 0.01 MI N JCT W TH37 (Lat: 44.508333,  Lng: -72.864444),  Route carried "on" structure: Other road C3036,  Year Built: 1998,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 50 (year 1999),  Truck Traffic: 2%,  Average Future Daily Traffic: 75 (year 2019),  Design Load: HS 25,  Features Intersected: STEVENSVILLE BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 6.4m (21.0ft),  Skew: 2 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.5m (27.9ft),  Curb-To-Curb Width: 5.2m (17.1ft),  Out-to-Out Width: 5.9m (19.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Very good,  Channel: Good,  Operating Rating: 70.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 42.3 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 minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 1.65m (5.41ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Bridge Improvement Cost: $307,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $457,000 ( Estimate for 2007),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 200030001104152,  Location: 7.1 MI E JCT. VT.128 (Lat: 44.533056,  Lng: -72.945000),  Route carried "on" structure: State highway 15,  Year Built: 1938,  Year Reconstructed: 1972,  Status: Open,  Structure Length: 1.92m (6.30ft),  Average Daily Traffic: 6,300 (year 1998),  Truck Traffic: 9%,  Average Future Daily Traffic: 9,450 (year 2018),  Design Load: H 15,  Features Intersected: ROARING BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 23.485,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 8.8m (28.9ft),  Skew: 4 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 17.7m (58.1ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Good,  Channel: Fair,  Operating Rating: 42.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 25.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 2.68m (8.79ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Bridge Improvement Cost: $765,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $915,000 ( Estimate for 2007),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 200030001204152,  Location: 7.3 MI E JCT. VT.128 (Lat: 44.535833,  Lng: -72.947778),  Route carried "on" structure: State highway 15,  Year Built: 1938,  Status: Open,  Structure Length: 1.65m (5.41ft),  Average Daily Traffic: 5,000 (year 1998),  Truck Traffic: 9%,  Average Future Daily Traffic: 7,500 (year 2018),  Design Load: H 15,  Features Intersected: THE CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 23.894,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 15.8m (51.8ft),  Curb-To-Curb Width: 9.0m (29.5ft),  Out-to-Out Width: 10.3m (33.8ft)

Condition: Deck: Poor,  Superstructure: Good,  Substructure: Fair,  Channel: Very good,  Operating Rating: 33.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 19.8 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: Better than present minimum criteria,  Length Of Structure Improvement: 2.32m (7.61ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Bridge Improvement Cost: $672,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $822,000 ( Estimate for 2007),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 200233000604152,  Location: 5.3 MI S JCT. VT.108 (Lat: 44.580000,  Lng: -72.862778),  Route carried "on" structure: County highway 1,  Year Built: 1992,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 625 (year 1995),  Truck Traffic: 6%,  Average Future Daily Traffic: 937 (year 2015),  Design Load: H 10,  Features Intersected: SEYMOUR BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.7m (22.0ft),  Curb-To-Curb Width: 8.3m (27.2ft),  Out-to-Out Width: 9.0m (29.5ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Fair,  Operating Rating: 89.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 68.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.31m (4.30ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2006,  Bridge Improvement Cost: $335,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $485,000 ( Estimate for 2007),  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: 200233000704152,  Location: 5.6 MI S JCT. VT.108 (Lat: 44.575556,  Lng: -72.863611),  Route carried "on" structure: County highway 1,  Year Built: 1927,  Status: Open,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 980 (year 1995),  Truck Traffic: 6%,  Average Future Daily Traffic: 1,470 (year 2015),  Design Load: H 10,  Features Intersected: SEYMOUR RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 5.8m (19.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.6m (24.9ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 6.4m (21.0ft),  Out-to-Out Width: 7.1m (23.3ft)

Condition: Deck: Very good,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 50.4 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 29.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.52m (4.99ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2006,  Bridge Improvement Cost: $309,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $459,000 ( Estimate for 2007),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 200233000804152,  Location: 3.0 MI E JCT. VT.15 (Lat: 44.508333,  Lng: -72.896667),  Route carried "on" structure: County highway 1,  Year Built: 1957,  Status: Open,  Structure Length: 2.26m (7.41ft),  Average Daily Traffic: 1,550 (year 1995),  Truck Traffic: 6%,  Average Future Daily Traffic: 2,325 (year 2015),  Features Intersected: BROWNS RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 9.4m (30.8ft),  Skew: 3 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 21.9m (71.9ft),  Curb-To-Curb Width: 9.5m (31.2ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Channel: Fair,  Operating Rating: 30.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 17.1 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 2.93m (9.61ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2006,  Bridge Improvement Cost: $911,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $1,061,000 ( Estimate for 2007),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 200233000904152,  Location: 2.6 MI E JCT. VT.15 (Lat: 44.508333,  Lng: -72.903889),  Route carried "on" structure: County highway 1,  Year Built: 2001,  Status: Open,  Structure Length: 1.83m (6.00ft),  Average Daily Traffic: 2,730 (year 1995),  Truck Traffic: 6%,  Average Future Daily Traffic: 4,095 (year 2015),  Design Load: HS 25,  Features Intersected: BROWNS RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 8.2m (26.9ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 17.7m (58.1ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.8m (28.9ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Satisfactory,  Operating Rating: 71.1 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 63.0 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.56m (8.40ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2006,  Bridge Improvement Cost: $641,000,  Roadway Improvement Cost: $150,000,  Total Project Cost: $791,000 ( Estimate for 2007),  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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