National Bridge Inventory: Nevada



  • Of the 2,067 bridges in the state, 29, or 1.4 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is up from 26 bridges classified as structurally deficient in 2017.
  • The deck area of structurally deficient bridges accounts for 1.2 percent of total deck area on all structures.
  • 3 of the structurally deficient bridges are on the Interstate Highway System. A total of 79.3 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.
  • 25 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 275 bridges at an estimated cost of $663.1 million.
  • This compares to 265 bridges that needed work in 2017.

County Year Built Daily Crossings Type of Bridge Location
Clark 1981 127,000 Urban Interstate I 515, US95, US93 over Sr590 Desert Inn Rd
Clark 1984 122,400 Urban Interstate I 515, US95, US93 over Eastern Ave
Washoe 1966 52,500 Urban Interstate I 80 over City Streets(Nugget)
Clark 1971 36,000 Urban other principal arterial Paradise Rd over Tropicana Wash
Clark 2008 31,000 Urban local road Silverado Ranch Bl over I 15
Washoe 1921 13,000 Urban minor arterial Arlington Av over Truckee Rvr
Washoe 1966 12,800 Urban minor arterial Keystone Av over Truckee River
Washoe 1980 11,000 Urban minor arterial Greg St over Truckee River
Washoe 1938 10,000 Urban minor arterial Arlington Av over Truckee Rvr
Washoe 1937 7,600 Urban minor arterial Sierra St over Truckee Rvr
Elko 1974 6,700 Urban other principal arterial Idaho St over Dry Wash
Churchill 2017 1,300 Rural arterial US95 over Drainage
Washoe 1962 1,300 Rural major collector Fr Wa09 Canyon Way over Sprr
Nye 1936 1,200 Rural arterial US 6 over Ralston Wash
Storey 1997 1,000 Rural local road Six mile Canyon Rd over Six mile Canyon Crk
Washoe 1991 605 Urban local road Evans Creek Dr over Evans Crk
Pershing 1919 370 Rural major collector SR 396 Cornell Av over Humboldt Rvr
Lyon 1955 274 Rural local road Rural Road over Truckee-Carson Canal
Elko 1965 250 Rural major collector SR 229/Halleck Rd over Humboldt River
Elko 1935 140 Rural major collector Sr230 Starr Vly Rd over Uprr
Storey 1995 139 Rural local road Ave De Couleurs over Lousetown Crk
Lyon 1945 128 Rural local road Shady Av over Gold Canyon Crk
Lyon 1970 85 Rural minor collector Old SR 3C E. Wk.R over East Fork Walker Rvr
Lyon 1976 70 Rural minor collector Old SR 3C over East Walker River
Storey 1998 50 Rural local road Connect Div Forest over Long Valley Crk
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 318 232,659 3,611,370 0 0 0
Rural arterial 147 67,489 948,650 2 181 2,500
Rural minor arterial 37 18,943 157,630 0 0 0
Rural major collector 97 38,180 169,796 4 1,638 2,060
Rural minor collector 60 25,342 112,703 2 174 155
Rural local road 175 43,937 113,150 9 1,684 1,677
Urban Interstate 286 574,179 18,314,045 3 8,963 301,900
Urban freeway/expressway 80 129,595 4,094,285 0 0 0
Urban other principal arterial 145 166,442 3,593,880 2 1,037 42,700
Urban minor arterial 208 262,729 3,782,528 5 5,388 54,400
Urban collector 220 224,749 1,907,351 0 0 0
Urban local road 294 127,742 1,059,412 2 3,773 31,605
Total 2,067 1,911,986 37,864,800 29 22,838 436,997
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 237 $621 6,126,871 255,122
Widening & rehabilitation 3 $3 12,700 2,263
Rehabilitation 14 $31 415,456 16,104
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 21 $8 14,334 3,508
Total 275 $663 6,569,361 276,998

About the data:

Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on January 3, 2022. 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 January 3, 2022.

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 2020 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.

51
Compared to 51 in 2020

in the nation in % of structurally deficient bridges

1. West Virginia 20.4%
50. Texas 1.4%
51. Nevada 1.4%

50
Compared to 51 in 2020

in the nation in # of structurally deficient bridges

1. Iowa 4,504
49. Utah 63
50. Nevada 29
51. Delaware 17

49
Compared to 51 in 2020

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 19.5%
48. Arizona 1.3%
49. Nevada 1.2%
50. Texas 1.1%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on January 3, 2022. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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