National Bridge Inventory: Vermont



  • Of the 2,827 bridges in the state, 66, or 2.3 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 83 bridges classified as structurally deficient in 2016.
  • The deck area of structurally deficient bridges accounts for 3.9 percent of total deck area on all structures.
  • 5 of the structurally deficient bridges are on the Interstate Highway System. A total of 83.3 percent of the structurally deficient bridges are not on the National Highway System, which includes the Interstate and other key roads linking major airports, ports, rail and truck terminals.
  • 184 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 1,227 bridges at an estimated cost of $838.9 million.
  • This compares to 1,255 bridges that needed work in 2016.

County Year Built Daily Crossings Type of Bridge Location
Windsor 1966 20,734 Urban Interstate I-89 NB over Connecticut River,Necrr
Windsor 1966 19,960 Urban Interstate I-89 SB over Connecticut River,Necrr
Chittenden 1964 17,800 Urban other principal arterial US 2 ML over I 89 under US 2
Washington 1928 13,500 Urban other principal arterial US 302 ML over Stevens Branch
Windham 1963 13,200 Rural Interstate I 091 ML over I 91 over TH 1 Saxton
Windsor 1968 12,500 Rural Interstate I 091 ML over I 91 over VT 10A
Windsor 1968 12,500 Rural Interstate I 091 ML over I 91 over VT 10A
Windsor 1931 9,500 Rural arterial VT 103 ML over Jewell Brook
Windsor 1911 8,900 Rural arterial US 4 ML over Ottauquechee River
Windham 1920 8,492 Urban collector Nh119 over Connecticut River
Chittenden 1964 8,400 Rural major collector US 2 ML over I 89 under US 2
Addison 1920 7,800 Rural minor arterial VT 030 ML over VT 30 over VT RR
Chittenden 2018 7,500 Rural major collector City Marshall over Muddy Brook
Windham 1930 6,100 Urban collector Bridge Street over Connecticut River
Windsor 1962 5,700 Rural arterial VT 103 ML over Williams River
Windsor 1962 5,600 Rural arterial VT 103 ML over Williams R. & Gmrr
Washington 1961 5,600 Rural major collector US 2 ML over Little River
Rutland 1956 4,900 Rural arterial US 4 ML over Ottauquechee River
Washington 1926 4,200 Rural major collector VT 012 ML over Dog River
Lamoille 1932 4,100 Rural minor arterial VT 1 ML over Gihon River
Windsor 1928 3,900 Rural major collector VT 012 ML over Gilead Brook
Essex 1950 3,592 Rural arterial US 2 over Connecticut River
Franklin 1969 3,500 Rural minor arterial VT 105 ML over Loveland Brook
Washington 1928 3,200 Rural minor arterial VT 014 ML over Pekin Brook
Washington 1928 3,100 Rural minor arterial VT 014 ML over Kingsbury Branch
Type of Bridge Number of Bridges Area of All Bridges
(sq. meters)
Daily Crossings on All Bridges Number of Structurally Deficient Bridges Area of Structurally Deficient Bridges
(sq. meters)
Daily Crossings on Structurally Deficient Bridges
Rural Interstate 258 209,827 3,845,900 3 3,648 38,200
Rural arterial 123 102,042 890,988 6 4,570 38,192
Rural minor arterial 296 140,587 1,251,977 9 3,949 31,400
Rural major collector 538 160,971 1,004,896 17 10,523 43,698
Rural minor collector 174 30,479 96,690 1 59 160
Rural local road 1,235 151,702 291,007 23 5,059 7,690
Urban Interstate 56 60,660 1,614,494 2 5,626 40,694
Urban freeway/expressway 2 977 19,800 0 0 0
Urban other principal arterial 55 50,846 592,100 2 1,274 31,300
Urban minor arterial 13 7,103 57,978 0 0 0
Urban collector 45 21,191 158,855 3 1,698 16,492
Urban local road 32 7,079 28,659 0 0 0
Total 2,827 943,464 9,853,344 66 36,405 247,826
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 235 $112 213,982 35,880
Widening & rehabilitation 0 $0 0 0
Rehabilitation 991 $727 4,077,176 325,702
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 1 $0 100 116
Total 1,227 $839 4,291,258 361,697

About the data:

Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on March 11, 2021. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections. Cost estimates were downloaded by ARTBA on March 11, 2021.

Effective January 1, 2018, FHWA changed the definition of structurally deficient as part of the final rule on highway and bridge performance measures, published May 20, 2017 pursuant to the 2012 federal aid highway bill Moving Ahead for Progress in the 21st Century Act (MAP-21). Two measures that were previously used to classify bridges as structurally deficient are no longer used. This includes bridges where the overall structural evaluation was rated in poor or worse condition, or where the adequacy of waterway openings was insufficient.

The new definition limits the classification to bridges where one of the key structural elements—the deck, superstructure, substructure or culverts, are rated in poor or worse condition. During inspection, the conditions of a variety of bridge elements are rated on a scale of 0 (failed condition) to 9 (excellent condition). A rating of 4 is considered “poor” condition.

Cost estimates have been derived by ARTBA, based on 2019 average bridge replacement costs for structures on and off the National Highway System, published by FHWA. Bridge rehabilitation costs are estimated to be 68 percent of replacement costs. A bridge is considered to need repair if the structure has identified repairs as part of the NBI, a repair cost estimate is supplied by the bridge owner or the bridge is classified as structurally deficient. Please note that for a few states, the number of bridges needing to be repaired can vary significantly from year to year, and reflects the data entered by the state.

Bridges are classified by FHWA into types based on the functional classification of the roadway on the bridge. Interstates comprise routes officially designated by the Secretary of Transportation. Other principal arterials serve major centers of urban areas or provide mobility through rural areas. Freeways and expressways have directional lanes generally separated by a physical barrier, and access/egress points generally limited to on- and off-ramps. Minor arterials serve smaller areas and are used for trips of moderate length. Collectors funnel traffic from local roads to the arterial network; major collectors have higher speed limits and traffic volumes and are longer in length and spaced at greater intervals, while minor collectors are shorter and provide service to smaller communities. Local roads do not carry through traffic and are intended for short distance travel.

47
Compared to 48 in 2019

in the nation in % of structurally deficient bridges

1. West Virginia 21.2%
46. Georgia 2.5%
47. Vermont 2.3%
48. Delaware 2.2%

48
Compared to 48 in 2019

in the nation in # of structurally deficient bridges

1. Iowa 4,571
47. Hawaii 84
48. Vermont 66
49. Utah 62

36
Compared to 40 in 2019

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 21.0%
35. Mississippi 4.0%
36. Vermont 4.0%
37. Wisconsin 4.0%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on March 11, 2021. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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