National Bridge Inventory: Nevada

  • Of the 1,979 bridges in the state, 27, or 1.4 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 30 bridges classified as structurally deficient in 2014.
  • 3 of the structurally deficient bridges are on the Interstate Highway System.
  • 23 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 271 bridges at an estimated cost of $653.1 million.
  • This compares to 287 bridges that needed work in 2014.

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
Clark 1971 38,000 Urban other principal arterial Paradise Rd over Tropicana Wash
Washoe 1966 13,000 Urban minor arterial Keystone Av over Truckee River
Washoe 1921 13,000 Urban minor arterial Arlington Av over Truckee Rvr
Washoe 1938 13,000 Urban minor arterial Arlington Av over Truckee Rvr
Clark 1994 9,700 Urban other principal arterial Sr582 Boulder SB over Rmp I 515N to Boulder
Washoe 1937 7,300 Urban minor arterial SR 660 Sierra St over Truckee Rvr
Elko 1974 7,200 Urban other principal arterial Idaho St over Dry Wash
Pershing 1977 4,000 Rural Interstate I 80 over Fairview Ditch
Churchill 1931 2,400 Rural minor collector Main Street over L Line Canal
Washoe 1962 1,705 Rural major collector Fr Wa09 Canyon Way over Sprr
Nye 1936 1,100 Rural arterial US 6 over Ralston Wash
Storey 1997 850 Rural local road Six mile Canyon Rd over Six mile Canyon Crk
Eureka 1946 650 Rural major collector Sr278 Eureka-Carln over Slough
Washoe 1991 605 Urban local road Evans Creek Dr over Evans Crk
Pershing 1919 400 Rural major collector SR 396 Cornell Av over Humboldt Rvr
Lyon 1955 274 Rural local road Rural Road over Truckee-Carson Canal
Elko 1956 150 Rural major collector SR 226/Deep Creek over Jack Creek
Elko 1935 150 Rural major collector Sr230 Starr Vly Rd over Uprr
Storey 1998 121 Rural local road Connect Div Forest over Long Valley Crk
Mineral 1942 90 Rural major collector Sr361 Gabbs Vly over Petrified Wash
Lyon 1970 85 Rural minor collector Old SR 3C E. Wk.R over East Fork Walker Rvr
Lyon 1950 25 Rural local road Minister Rd over E Walker Rvr
Pershing 1931 24 Rural local road Fr Pe01 over Sprr
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 321 232,045 3,204,880 1 95 4,000
Rural arterial 141 62,965 786,976 1 107 1,100
Rural minor arterial 34 18,010 144,345 0 0 0
Rural major collector 95 37,169 137,788 6 1,618 3,145
Rural minor collector 61 25,505 103,520 3 451 2,509
Rural local road 164 41,162 93,586 6 1,460 1,306
Urban Interstate 255 540,196 15,393,570 2 4,335 249,400
Urban freeway/expressway 77 115,098 3,891,420 0 0 0
Urban other principal arterial 140 161,648 3,341,160 3 1,535 54,900
Urban minor arterial 182 213,507 3,135,818 4 4,180 46,300
Urban collector 218 225,487 1,742,177 0 0 0
Urban local road 291 118,700 952,884 1 54 605
Total 1,979 1,791,492 32,928,124 27 13,835 363,265
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 242 $641 6,040,411 256,922
Widening & rehabilitation 3 $4 11,110 2,262
Rehabilitation 12 $7 175,313 7,038
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 14 $1 9,513 1,920
Total 271 $653 6,236,347 268,143

About the data:

Data from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), released March 15, 2019. 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 2017 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 cost estimate is supplied by the bridge owner or the bridge is classified as structurally deficient.

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.

from 51 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
50. Arizona 1.8%
51. Nevada 1.4%

from 51 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
50. Delaware 34
51. Nevada 27
Full State Ranking

  • Source: Bridge data is from the 2018 National Bridge Inventory ASCII files, released by the Federal Highway Administration on March 14, 2019. Note that specific conditions on bridges may have changed as a result of recent work. ARTBA is a non-partisan federation whose primary goal is to aggressively grow and protect transportation infrastructure investment to meet the public and business demand for safe and efficient travel.
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