National Bridge Inventory: California



  • Of the 25,737 bridges in the state, 1,812, or 7.0 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 2,388 bridges classified as structurally deficient in 2014.
  • 150 of the structurally deficient bridges are on the Interstate Highway System.
  • 561 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 5,093 bridges at an estimated cost of $8.8 billion.
  • This compares to 5,512 bridges that needed work in 2014.

County Year Built Daily Crossings Type of Bridge Location
Los Angeles 1959 289,000 Urban freeway/expressway US Route 101 over Kester Ave
Los Angeles 1961 283,000 Urban Interstate Interstate 405 over 213th Street
Orange 1992 279,000 Urban Interstate Interstate 5 over State Route 261
Orange 1979 279,000 Urban Interstate Interstate 5 over Culver Dr
Los Angeles 1963 272,600 Urban Interstate Interstate 405 over Imperial Highway
Orange 2000 241,000 Urban Interstate Interstate 5 over Orangewood Ave
Orange 2000 241,000 Urban Interstate Interstate 5 over Anaheim Blvd
Los Angeles 1961 237,800 Urban Interstate Interstate 405 over 223rd Street Oh
Contra Costa 1998 235,000 Urban Interstate Interstate 680 over Monument Boulevard
Los Angeles 1959 229,750 Urban freeway/expressway US Highway 101 over Sepulveda Blvd
Los Angeles 1954 220,000 Urban Interstate Interstate 710 over UP RR & Noakes Street
Santa Clara 1965 203,000 Urban Interstate Interstate 280 over Lawrence Expwy & Creek
Solano 1951 202,000 Urban Interstate Interstate 80 over Dan Wilson Creek
Sacramento 1970 200,000 Urban Interstate Interstate 80 over Winters Street
Alameda 1957 198,000 Urban Interstate Interstate 880 over Patterson Slough
San Mateo 1930 195,000 Urban freeway/expressway U.S. Highway 101 over Cordilleras Creek
Santa Clara 1974 175,000 Urban Interstate Interstate 680 over Berryessa Creek
Sacramento 1970 170,000 Urban Interstate Interstate 80EB over Rio Linda Blvd
Sacramento 1970 170,000 Urban Interstate Interstate 80 EB over UP RR, BNSF Ry,Steelhead
Alameda 1957 169,000 Urban Interstate Interstate 580 over San Lorenzo Creek
Santa Clara 1965 158,000 Urban Interstate Interstate 280 over Stevens Creek Boulevard
Solano 1948 145,000 Urban Interstate Interstate 80 over E80-N29 Connector Ramp
Alameda 1964 140,000 Urban Interstate Interstate 580 over Foothill Blvd
Alameda 1963 140,000 Urban Interstate Interstate 680 over SR 238 (Mission Blvd)
Santa Clara 1965 138,500 Urban other principal arterial De Anza Boulevard over Interstate 280
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 1,204 1,329,042 30,853,241 60 44,063 1,024,600
Rural arterial 1,392 1,269,846 22,567,218 55 63,417 778,482
Rural minor arterial 1,457 1,003,191 7,358,527 73 45,938 301,521
Rural major collector 2,198 1,031,178 5,699,733 249 136,862 637,543
Rural minor collector 1,217 409,703 1,412,380 141 39,436 104,115
Rural local road 4,189 1,069,473 3,063,300 456 97,727 186,235
Urban Interstate 2,623 8,070,469 269,979,982 90 266,063 8,030,186
Urban freeway/expressway 3,111 6,950,392 210,500,664 100 502,698 4,281,182
Urban other principal arterial 2,527 3,800,741 60,817,083 199 432,006 5,119,936
Urban minor arterial 2,584 3,081,385 36,857,256 174 246,203 2,609,617
Urban collector 1,404 952,997 8,735,805 107 70,687 651,125
Urban local road 1,831 1,099,215 8,366,102 108 56,964 377,983
Total 25,737 30,067,631 666,211,291 1,812 2,002,063 24,102,525
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 1,096 $1,582 6,121,656 616,073
Widening & rehabilitation 3 $0 3,600 339
Rehabilitation 3,825 $7,195 98,904,008 6,097,924
Deck rehabilitation/replacement 8 $0 465 1,955
Other structural work 161 $11 224,396 46,052
Total 5,093 $8,788 105,300,000 6,762,343

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.

28
from 35 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
27. Kentucky 7.1%
28. California 7.0%
29. Idaho 7.0%

7
from 13 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
6. North Carolina 1,871
7. California 1,812
8. New York 1,757
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.
  • Privacy & Cookies Policy
Connect With Us

Copyright © 2019 American Road & Transportation Builders Association