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


  • National Bridge Inventory (NBI) Statistics
  • 21Number of bridges
  • 276ft / 83.8mTotal length
  • $65,982,000Total costs
  • 60,698Total average daily traffic
  • 5,677Total average daily truck traffic
  • 89,820Total future (year 2042) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Thornton
  • No street view available for this location

New bridges in Thornton, NH - historical statistics
  • New bridges - historical statistics
  • 21930-1939
  • 11940-1949
  • 61960-1969
  • 71970-1979
  • 21980-1989
  • 12000-2009
  • 22010-2019
Reconstructed bridges in Thornton, NH - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11970-1979
  • 11980-1989
  • 61990-1999
  • 12000-2009
Average Bridge Daily Traffic in Thornton, NH
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 5.9%Excellent
  • 11.8%Very good
  • 58.8%Good
  • 17.6%Satisfactory
  • 5.9%Poor
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 5.9%Excellent
  • 41.2%Very good
  • 29.4%Good
  • 23.5%Satisfactory
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 11.8%Very good
  • 70.6%Good
  • 11.8%Satisfactory
  • 5.9%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 5.9%Very good
  • 35.3%Good
  • 35.3%Satisfactory
  • 23.5%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 25.0%Very good
  • 25.0%Good
  • 50.0%Fair
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Structure Number: 254011000106,  Location: 0.3 MI FROM WOODSTOCK TL (Lat: 43.967478,  Lng: -71.664858),  Route carried "on" structure: Other road ,  Year Built: 1988,  Status: Open,  Structure Length: 2.65m (8.69ft),  Average Daily Traffic: 137 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 202 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: EASTMAN BROOK,  Facility Carried by Structure: THORNTON GORE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.423,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 5.8m (19.0ft),  Skew: 4 degrees,  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: 8.8m (28.9ft),  Out-to-Out Width: 9.9m (32.5ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 85.7 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 51.4 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Better than 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: 2.65m (8.69ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  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: 254011100121,  Location: 0.9 MI FROM WOODSTOCK TL (Lat: 43.966175,  Lng: -71.652294),  Route carried "on" structure: Other road ,  Year Built: 1948,  Status: Posted for load,  Structure Length: 0.88m (2.89ft),  Average Daily Traffic: 137 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 202 (year 2042),  Design Load: H 15,  Features Intersected: JOHNSON BROOK,  Facility Carried by Structure: THORNTON GORE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.476,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 5.5m (18.0ft),  Material/Design: Concrete,  Design/Construction: Frame,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.9m (25.9ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 5.5m (18.0ft),  Out-to-Out Width: 6.4m (21.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Fair,  Operating Rating: 30.8 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 22.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of corrective action,  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: 20.0 - 29.9% below),  Length Of Structure Improvement: 0.88m (2.89ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 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: 254015200073,  Location: 1.9 MI S WOODSTOCK TL (Lat: 43.933097,  Lng: -71.687522),  Route carried "on" structure: Interstate 93,  Year Built: 1970,  Status: Open,  Structure Length: 1.16m (3.81ft),  Average Daily Traffic: 6,358 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 9,409 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: HUBBARD BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 62.003,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 5.5m (18.0ft),  Out-to-Out Width: 36.5m (119.8ft)

Condition: Channel: Fair,  Culverts: Fair,  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: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.16m (3.81ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 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: 254015300074,  Location: 1.3 MI S WOODSTOCK TL (Lat: 43.933081,  Lng: -71.686889),  Route carried "on" structure: Interstate 93,  Year Built: 1970,  Status: Open,  Structure Length: 1.16m (3.81ft),  Average Daily Traffic: 6,216 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 9,199 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: HUBBARD BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 149.888,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 5.5m (18.0ft),  Out-to-Out Width: 45.5m (149.3ft)

Condition: Channel: Satisfactory,  Culverts: Fair,  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: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.16m (3.81ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 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: 254015400075,  Location: 5.3 MI. FROM CAMPTON TL (Lat: 43.932694,  Lng: -71.685147),  Route carried "on" structure: US 3,  Year Built: 1971,  Status: Open,  Structure Length: 1.55m (5.09ft),  Average Daily Traffic: 881 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 1,303 (year 2042),  Design Load: HS 20,  Features Intersected: HUBBARD BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 191.575,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.8m (42.0ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Frame,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 7.3m (24.0ft),  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: 14.1m (46.3ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 44.5 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 26.3 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.55m (5.09ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2020,  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: 254016700151,  Location: 20' WEST OF BR. #165/151 (Lat: 43.930894,  Lng: -71.614206),  Route carried "on" structure: Other road ,  Year Built: 2019,  Status: Open,  Structure Length: 0.67m (2.20ft),  Average Daily Traffic: 81 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 119 (year 2042),  Features Intersected: MILL BROOK,  Facility Carried by Structure: MILL BROOK ROAD
Minimum Vertical Clearance: 30.18m (99.02ft),  Kilometerpoint: 5.922,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 5.5m (18.0ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Good,  Culverts: Very good,  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 desirable criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 0.67m (2.20ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 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: 254017300064,  Location: 3.9 MI CAMPTON TL (Lat: 43.917469,  Lng: -71.692194),  Route carried "on" structure: Interstate 93,  Year Built: 1969,  Year Reconstructed: 2001,  Status: Open,  Structure Length: 2.13m (6.99ft),  Average Daily Traffic: 6,358 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 9,409 (year 2042),  Design Load: HS 25 or greater,  Features Intersected: MERRILL ACCESS RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 63.814,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 19.8m (65.0ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 12.5m (41.0ft),  Out-to-Out Width: 13.7m (44.9ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Operating Rating: 56.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 40.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.13m (6.99ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 254017300066,  Location: 3.8 MI CAMPTON TL (Lat: 43.917519,  Lng: -71.691036),  Route carried "on" structure: Interstate 93,  Year Built: 1969,  Year Reconstructed: 2001,  Status: Open,  Structure Length: 2.13m (6.99ft),  Average Daily Traffic: 6,216 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 9,199 (year 2042),  Design Load: HS 25 or greater,  Features Intersected: MERRILL ACCESS RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 148.097,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 20.1m (65.9ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 12.5m (41.0ft),  Out-to-Out Width: 13.7m (44.9ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Operating Rating: 56.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 40.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 2.13m (6.99ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 254017500076,  Location: 0.18 MI. E. OF JCT US 3 (Lat: 43.917317,  Lng: -71.683317),  Route carried "on" structure: State highway ,  Year Built: 1973,  Year Reconstructed: 2012,  Status: Open,  Structure Length: 12.71m (41.70ft),  Average Daily Traffic: 611 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 904 (year 2042),  Design Load: HL 93,  Features Intersected: PEMIGEWASSET RIVER,  Facility Carried by Structure: CROSS ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.135,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 1 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 34.7m (113.8ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 10.1m (33.1ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Good,  Channel: Fair,  Operating Rating: 73.5 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 56.7 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 12.71m (41.70ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2020,  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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 254017500141,  Location: 0.19 MI FR MILLBROOK RD (Lat: 43.925689,  Lng: -71.619317),  Route carried "on" structure: Other road ,  Year Built: 1986,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 81 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 119 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: MILL BROOK,  Facility Carried by Structure: SULLIVAN DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.315,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 4.9m (16.1ft),  Skew: 2 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 12.2m (40.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.2m (26.9ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Very good,  Channel: Good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 55.5 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Equal to present desirable 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: 1.37m (4.49ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  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: 254018300107,  Location: OFF MILL BROOK ROAD (Lat: 43.915814,  Lng: -71.651078),  Route carried "on" structure: Other road ,  Year Built: 2018,  Status: Open,  Structure Length: 1.31m (4.30ft),  Average Daily Traffic: 81 (year 2020),  Truck Traffic: 5%,  Average Future Daily Traffic: 119 (year 2042),  Design Load: HL 93,  Features Intersected: MILL BROOK,  Facility Carried by Structure: COVERED BRIDGE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.072,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.9m (22.6ft),  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  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: 7.0m (23.0ft),  Out-to-Out Width: 8.4m (27.6ft)

Condition: Deck: Excellent,  Superstructure: Excellent,  Substructure: Very good,  Channel: Very good,  Operating Rating: 58.3 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 44.9 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 1.31m (4.30ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 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: Integral Concrete,  Membrane: Preformed Fabric,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 254018500104,  Location: 190 FT FROM MILLBROOK RD (Lat: 43.912589,  Lng: -71.653492),  Route carried "on" structure: Other road ,  Year Built: 2003,  Status: Open,  Structure Length: 1.55m (5.09ft),  Average Daily Traffic: 81 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 119 (year 2042),  Design Load: HS 25 or greater,  Features Intersected: MILL BROOK,  Facility Carried by Structure: STEELE BRIDGE ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.027,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.9m (48.9ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 7.4m (24.3ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 54.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 41.2 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.55m (5.09ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  Bridge Improvement Cost: $2,718,000,  Roadway Improvement Cost: $200,000,  Total Project Cost: $3,142,000 ( Estimate for 2022),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Other
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Structure Number: 25401880007,  Location: 3.5 MI FROM CAMPTON TL (Lat: 43.906753,  Lng: -71.683539),  Route carried "on" structure: US 3,  Year Built: 1933,  Year Reconstructed: 1985,  Status: Open,  Structure Length: 0.82m (2.69ft),  Average Daily Traffic: 881 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 1,303 (year 2042),  Design Load: H 15,  Features Intersected: BAGLEY BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 188.660,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.6m (24.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 10.3m (33.8ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 47.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 27.2 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  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: 0.82m (2.69ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 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: 254020300088,  Location: 2.85 MI. N. OF CAMPTON TL (Lat: 43.901908,  Lng: -71.667053),  Route carried "on" structure: State highway 175,  Year Built: 1935,  Year Reconstructed: 1979,  Status: Open,  Structure Length: 1.25m (4.10ft),  Average Daily Traffic: 2,029 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 3,002 (year 2042),  Design Load: H 10,  Features Intersected: MILL BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 25.949,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.6m (38.1ft),  Curb-To-Curb Width: 7.5m (24.6ft),  Out-to-Out Width: 8.6m (28.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Fair,  Operating Rating: 22.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 16.3 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.25m (4.10ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 2020,  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: 25402220018,  Location: 150 FT FR NH RTE 49 (Lat: 43.897875,  Lng: -71.572103),  Route carried "on" structure: Other road ,  Year Built: 1978,  Status: Open,  Structure Length: 3.20m (10.50ft),  Average Daily Traffic: 402 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 594 (year 2042),  Design Load: HS 20,  Features Intersected: MAD RIVER,  Facility Carried by Structure: UPPER MAD RIVER RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.051,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 30.5m (100.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 8.1m (26.6ft),  Out-to-Out Width: 9.3m (30.5ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 49.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 29.8 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: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.20m (10.50ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  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: 254023200176,  Location: 0.6 MI W OF WATERVILLE TL (Lat: 43.891192,  Lng: -71.574675),  Route carried "on" structure: State highway 49,  Year Built: 1977,  Status: Open,  Structure Length: 1.43m (4.69ft),  Average Daily Traffic: 1,517 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 2,245 (year 2042),  Design Load: HS 20,  Features Intersected: SMARTS BROOK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 9.780,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 9.7m (31.8ft),  Skew: 5 degrees,  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.3m (46.9ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 69.9 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor (LRFR),  Inventory Rating: 41.7 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor (LRFR),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.43m (4.69ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2020,  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: 254023900152,  Location: 1.9 MI SW WATERVILLE T L (Lat: 43.881814,  Lng: -71.596114),  Route carried "on" structure: State highway 49,  Year Built: 1979,  Status: Open,  Structure Length: 16.46m (54.00ft),  Average Daily Traffic: 1,517 (year 2020),  Truck Traffic: 4%,  Average Future Daily Traffic: 2,245 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: MAD RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.694,  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: 5,  Length of Maximum Span: 39.6m (129.9ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 1.5m (4.9ft),  Curb-To-Curb Width: 9.5m (31.2ft),  Out-to-Out Width: 12.0m (39.4ft)

Condition: Deck: Poor,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 44.5 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: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 16.46m (54.00ft),  Designated Inspection Frequency: Every 8 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Critical Feature Inspection Date: June 2020,  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: 254024300076,  Location: 0.2 MI CAMPTON TL (Lat: 43.869344,  Lng: -71.667822),  Route carried "on" structure: Interstate 93,  Year Built: 1968,  Year Reconstructed: 2001,  Status: Open,  Structure Length: 3.20m (10.50ft),  Average Daily Traffic: 6,844 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 10,129 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: US 3
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 69.673,  Lanes on structure: 3,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 17.1m (56.1ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 30.5m (100.1ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 16.5m (54.1ft),  Out-to-Out Width: 17.7m (58.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Operating Rating: 67.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 40.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.20m (10.50ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 254024300077,  Location: 0.2 MI CAMPTON TL (Lat: 43.869572,  Lng: -71.667542),  Route carried "on" structure: Interstate 93,  Year Built: 1968,  Year Reconstructed: 2001,  Status: Open,  Structure Length: 3.20m (10.50ft),  Average Daily Traffic: 7,044 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 10,425 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: US 3
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 142.305,  Lanes on structure: 3,  Lanes under structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 16.2m (53.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 30.5m (100.1ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 16.0m (52.5ft),  Out-to-Out Width: 17.4m (57.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Operating Rating: 73.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 43.9 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,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.20m (10.50ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 254024700079,  Location: 0.1 MI CAMPTON TL (Lat: 43.867531,  Lng: -71.664717),  Route carried "on" structure: Interstate 93,  Year Built: 1969,  Year Reconstructed: 2003,  Status: Open,  Structure Length: 12.47m (40.91ft),  Average Daily Traffic: 6,663 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 9,861 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: PEMIGEWASSET RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 69.992,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 15.2m (49.9ft),  Skew: 1 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 47.2m (154.9ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.5m (44.3ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 79.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 47.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 12.47m (40.91ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 25402470008,  Location: 0.1 MI CAMPTON TL (Lat: 43.867747,  Lng: -71.664408),  Route carried "on" structure: Interstate 93,  Year Built: 1969,  Year Reconstructed: 2002,  Status: Open,  Structure Length: 12.47m (40.91ft),  Average Daily Traffic: 6,563 (year 2020),  Truck Traffic: 10%,  Average Future Daily Traffic: 9,713 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: PEMIGEWASSET RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 141.973,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 1 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 47.2m (154.9ft),  Curb or Sidewalk Widths: Left: 0.1m (0.3ft),  Right: 0.1m (0.3ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.5m (44.3ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 79.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 47.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 12.47m (40.91ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: April 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,  Deck Protection: Epoxy Coated Reinforcing
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