National Bridge Inventory: Nevada

  • Of the 2,071 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 27 bridges classified as structurally deficient in 2018.
  • The deck area of structurally deficient bridges accounts for 1.0 percent of total deck area on all structures.
  • 5 of the structurally deficient bridges are on the Interstate Highway System. A total of 72.4 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 $763.1 million.
  • This compares to 271 bridges that needed work in 2018.

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
Washoe 1966 12,800 Urban minor arterial Keystone Av over Truckee River
Clark 1963 11,725 Rural Interstate I 15S over Sr604 Las Vegas Bl
Washoe 1980 11,000 Urban minor arterial Greg St over Truckee River
Washoe 1938 10,000 Urban minor arterial Arlington Av over Truckee Rvr
Clark 1977 7,900 Rural arterial US 95 over Eldorado Lake
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
Elko 1976 2,400 Rural Interstate I 80 over Uprr
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
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
Humboldt 1976 55 Rural local road IRR Ft Mcdermitt over Quinn Rvr
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 2 2,140 14,125
Rural arterial 148 67,761 959,150 2 221 9,100
Rural minor arterial 37 18,943 157,630 0 0 0
Rural major collector 97 38,181 169,826 3 1,028 1,690
Rural minor collector 61 25,433 112,728 2 174 155
Rural local road 173 43,948 113,124 10 1,949 1,732
Urban Interstate 287 579,455 18,338,045 3 8,963 301,900
Urban freeway/expressway 81 134,336 4,140,785 0 0 0
Urban other principal arterial 145 166,732 3,559,030 2 1,037 42,700
Urban minor arterial 210 268,415 3,810,778 4 4,532 41,400
Urban collector 220 225,034 1,907,351 0 0 0
Urban local road 294 127,263 1,059,132 1 54 605
Total 2,071 1,928,160 37,938,949 29 20,098 413,407
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 234 $720 6,126,476 254,365
Widening & rehabilitation 3 $4 12,700 2,263
Rehabilitation 16 $26 402,856 13,278
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 22 $12 15,121 5,180
Total 275 $763 6,557,153 275,086

About the data:

Data and cost estimates are from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on February 1, 2023. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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 2021 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.

Compared to 51 in 2021

in the nation in % of structurally deficient bridges

1. West Virginia 20.0%
49. Delaware 2.0%
50. Nevada 1.0%
51. Texas 1.0%

Compared to 50 in 2021

in the nation in # of structurally deficient bridges

1. Iowa 4,604
49. Utah 64
50. Nevada 29
51. Delaware 14

Compared to 49 in 2021

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 17.0%
49. Arizona 1.0%
50. Nevada 1.0%
51. Georgia 1.0%
Full State Ranking


  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on February 1, 2023. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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