National Bridge Inventory: Oklahoma



  • Of the 23,155 bridges in the state, 2,326, or 10.0 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 2,877 bridges classified as structurally deficient in 2016.
  • The deck area of structurally deficient bridges accounts for 4.9 percent of total deck area on all structures.
  • 18 of the structurally deficient bridges are on the Interstate Highway System. A total of 98.4 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.
  • 3,749 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 21,200 bridges at an estimated cost of $11.6 billion.
  • This compares to 21,864 bridges that needed work in 2016.

County Year Built Daily Crossings Type of Bridge Location
Oklahoma 1975 62,800 Urban Interstate I-44 over Oklahoma River/ Co. Rd.
Oklahoma 1975 61,950 Urban Interstate I-44 over Oklahoma River/ Co. Rd.
Oklahoma 1974 55,650 Urban Interstate I-44 NB over Independence Ave Under
Tulsa 1972 46,000 Urban Interstate I-444 WB Ramp over I-244 Under
Oklahoma 1962 43,900 Urban Interstate I-235 NB over I-44 Under
Tulsa 1968 42,850 Urban freeway/expressway U.S. 64 / S.H. 51 over 15 St. Under
Tulsa 1968 42,400 Urban freeway/expressway U.S. 64 / S.H. 51 over U.P. R.R. Under
Tulsa 1968 42,400 Urban freeway/expressway U.S. 64 / S.H. 51 over Lewis Ave Under
Oklahoma 1962 40,300 Urban Interstate I-235 SB over I-44 Under
Oklahoma 1960 39,000 Urban Interstate I-40 EB over FAU 9440 (Se 15 St) Und
Oklahoma 1960 39,000 Urban Interstate I-40 EB over Crutcho Creek
Oklahoma 1960 39,000 Urban Interstate I-40 EB over FAU 9481 (Sooner Rd) Und
Tulsa 1972 38,900 Urban freeway/expressway U.S. 75 over Creek
Oklahoma 1960 35,000 Urban Interstate I-40 WB over Crutcho Creek
Oklahoma 1960 35,000 Urban Interstate I-40 WB over FAU 9481 (Sooner Rd) Und
Tulsa 1956 32,300 Urban local road N40(S. Memorial over Fulton Creek
Oklahoma 1971 22,800 Urban minor arterial NW 122nd St. over Spring Creek
Oklahoma 1974 22,500 Urban minor arterial Macarthur Blvd. over N. Canadian River
Oklahoma 1954 21,300 Urban minor arterial SE 29th St(E1090) over Kuhlman Creek
Oklahoma 1942 20,500 Rural major collector SE 29th St(1090) over Crutcho Creek
Oklahoma 1945 20,000 Urban minor arterial S.W 59th Street over Lightning Creek
Tulsa 1965 19,481 Urban collector Fau 83(E 31St S over Mingo Creek
Tulsa 1975 19,279 Urban collector Fau 83(E.31St.) over Brookhollow Creek
Oklahoma 1967 18,200 Urban minor arterial NW 63rd St. over BNSF R.R. Under
Oklahoma 1972 17,900 Urban local road Sw 29th St. over I-44 Under
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 597 579,109 8,549,850 5 7,073 38,900
Rural arterial 1,397 1,145,658 7,577,423 10 12,523 61,650
Rural minor arterial 1,205 786,483 3,688,887 19 25,105 71,740
Rural major collector 7,150 2,226,818 6,064,877 595 137,569 223,301
Rural minor collector 5 9,489 3,960 1 4,132 1,700
Rural local road 9,524 1,393,417 1,833,413 1,505 137,098 190,738
Urban Interstate 496 775,279 18,602,387 13 20,568 518,700
Urban freeway/expressway 419 533,740 11,226,020 6 4,675 195,100
Urban other principal arterial 355 397,457 4,169,487 5 7,610 33,207
Urban minor arterial 703 456,323 4,714,780 47 20,907 333,077
Urban collector 586 462,429 3,459,790 54 37,768 230,222
Urban local road 718 167,871 1,235,022 66 15,325 102,902
Total 23,155 8,934,073 71,125,896 2,326 430,353 2,001,237
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 15,643 $10,694 45,150,585 6,990,326
Widening & rehabilitation 4,960 $825 21,793,329 790,687
Rehabilitation 88 $45 282,243 43,259
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 509 $85 473,716 90,999
Total 21,200 $11,649 67,699,873 7,915,271

About the data:

Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on March 11, 2021. 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 March 11, 2021.

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 2019 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.

11
Compared to 9 in 2019

in the nation in % of structurally deficient bridges

1. West Virginia 21.2%
10. North Dakota 10.3%
11. Oklahoma 10.0%
12. New York 9.7%

4
Compared to 3 in 2019

in the nation in # of structurally deficient bridges

1. Iowa 4,571
3. Illinois 2,374
4. Oklahoma 2,326
5. Missouri 2,190

29
Compared to 24 in 2019

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 21.0%
28. Nebraska 5.0%
29. Oklahoma 5.0%
30. Arkansas 5.0%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on March 11, 2021. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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