National Bridge Inventory: Alabama



  • Of the 16,130 bridges in the state, 689, or 4.3 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 783 bridges classified as structurally deficient in 2014.
  • 17 of the structurally deficient bridges are on the Interstate Highway System.
  • 2,734 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 16,054 bridges at an estimated cost of $6.6 billion.
  • This compares to 16,001 bridges that needed work in 2014.

County Year Built Daily Crossings Type of Bridge Location
Jefferson 1970 136,580 Urban Interstate I65 over U.S.11,RR*City Streets
Jefferson 1972 77,385 Urban Interstate I-59/20 over US 31,RRs*City Streets
Mobile 1966 71,940 Urban Interstate I-10 WB * EB over Southern Drain Canal
Mobile 1967 46,670 Urban Interstate I-65 over Hells Swamp Creek
Jefferson 1968 41,990 Urban Interstate I 59/20 over Arron Aronov Drive
Mobile 1964 33,574 Urban minor arterial Mcgregor Ave over Eslava Creek
Lee 1996 32,040 Urban freeway/expressway US 280 over First Avenue
Tuscaloosa 1956 31,380 Urban other principal arterial US 82 over Hargrove Mill Creek
Talladega 1935 25,590 Rural arterial US 280 over Norfolk Southern R/R
Lee 1959 23,680 Urban Interstate I-85 over Long St
Lee 1959 23,680 Urban Interstate I-85 over SR 51
Lee 1959 23,680 Urban Interstate I-85 over Long St
Conecuh 1959 23,380 Rural Interstate I-65 over Panther Creek
Walker 1962 23,120 Urban minor arterial Al 5 over US 78
Montgomery 1965 16,060 Rural Interstate I65 NBL over Pintlala Creek
Conecuh 1959 15,900 Rural Interstate I-65 SB over Murder Creek
Conecuh 1959 15,900 Rural Interstate I-65 NB over Murder Creek
Conecuh 1959 15,900 Rural Interstate I-65 NBL over Murder Creek Relief
Lowndes 1966 14,920 Rural Interstate I65 SBL over Branch
Autauga 1957 14,890 Rural arterial US 82 over Autauga Creek
Mobile 1931 14,260 Urban other principal arterial US 43 over Steele Creek
Jefferson 1915 14,000 Urban local road 22nd Street over Morris Ave * RR
Jefferson 1910 13,000 Urban local road 22nd St over Abandoned RR
Jefferson 1915 13,000 Urban local road 21st Street over Morris Ave * RR
Jefferson 1945 12,820 Urban other principal arterial Al 150 over Lil Shades Ck
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 669 1,172,845 13,359,020 8 8,008 123,230
Rural arterial 1,148 1,123,834 8,805,882 14 11,993 121,535
Rural minor arterial 1,515 989,502 5,013,809 26 16,895 87,419
Rural major collector 3,098 1,286,580 4,862,355 83 36,681 96,366
Rural minor collector 2,324 646,410 1,279,105 101 13,160 18,167
Rural local road 4,456 895,778 1,741,845 379 54,554 66,423
Urban Interstate 557 1,843,128 20,941,549 9 71,154 453,045
Urban freeway/expressway 87 181,572 1,765,342 1 868 32,040
Urban other principal arterial 552 739,311 10,709,698 6 4,020 87,085
Urban minor arterial 389 308,593 4,530,026 8 8,359 83,629
Urban collector 307 195,224 1,694,456 8 1,679 40,987
Urban local road 1,028 377,958 2,910,546 46 19,600 82,947
Total 16,130 9,760,735 77,613,633 689 246,971 1,292,873
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 4,726 $2,275 14,794,380 1,877,680
Widening & rehabilitation 567 $168 4,143,685 309,804
Rehabilitation 3,033 $2,139 26,786,936 3,041,886
Deck rehabilitation/replacement 9 $1 86,326 4,023
Other structural work 7,719 $2,024 31,785,463 4,514,687
Total 16,054 $6,608 77,596,790 9,748,079

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.

43
from 41 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
42. Tennessee 4.3%
43. Alabama 4.3%
44. Delaware 3.9%

23
from 23 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
22. Texas 695
23. Alabama 689
24. Minnesota 668
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