National Bridge Inventory: Oklahoma



  • Of the 23,116 bridges in the state, 2,540, or 11.0 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 3,440 bridges classified as structurally deficient in 2014.
  • 30 of the structurally deficient bridges are on the Interstate Highway System.
  • 3,863 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 21,454 bridges at an estimated cost of $8.2 billion.
  • This compares to 22,393 bridges that needed work in 2014.

County Year Built Daily Crossings Type of Bridge Location
Oklahoma 1960 87,300 Urban Interstate I-40 over Crooked Oak Creek
Oklahoma 1973 77,000 Urban Interstate I-44 E-S Ramp over S.H. 66 & S.H. 3 Under
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 50,100 Urban freeway/expressway U.S. 75 over S.W. Blvd.& R.R.Under
Tulsa 1971 47,200 Urban Interstate I-444 over Houston Ave. Under
Oklahoma 1951 46,450 Urban Interstate I-44 WB over Deep Fork Creek
Oklahoma 1951 46,150 Urban Interstate I-44 EB over Deep Fork Creek
Tulsa 1972 46,000 Urban Interstate I-444 over 6th St. Under
Tulsa 1972 45,300 Urban Interstate I-444 Ramp over N. 30th St 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 42,850 Urban freeway/expressway U.S. 64 / S.H. 51 over Lewis Ave Under
Tulsa 1968 42,400 Urban freeway/expressway U.S. 64 / S.H. 51 over Lewis Ave Under
Tulsa 1968 42,400 Urban freeway/expressway U.S. 64 / S.H. 51 over U.P. R.R. 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 1967 35,500 Urban Interstate I-244 Ramp N-E over I-244 WB Under
Tulsa 1967 35,500 Urban Interstate I-244 Ramp N-E over I-244 EB Under
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
Oklahoma 1980 35,000 Urban Interstate I-44 Ramp E over Deep Fork Creek
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 598 561,374 8,507,350 3 2,324 35,800
Rural arterial 1,391 1,114,251 7,540,710 16 33,436 100,750
Rural minor arterial 1,208 770,494 3,696,399 34 35,566 107,750
Rural major collector 7,128 2,151,700 6,013,951 676 179,089 296,600
Rural minor collector 5 9,490 4,260 1 4,132 2,000
Rural local road 9,542 1,371,382 1,813,219 1,597 142,716 207,886
Urban Interstate 499 768,543 18,682,737 27 37,514 1,116,900
Urban freeway/expressway 421 535,578 11,261,820 13 11,098 370,000
Urban other principal arterial 358 389,289 4,101,737 11 22,598 89,850
Urban minor arterial 703 460,054 4,734,724 39 21,838 229,059
Urban collector 567 438,792 3,367,601 50 34,671 195,448
Urban local road 696 167,663 1,254,924 73 17,503 119,180
Total 23,116 8,738,610 70,979,432 2,540 542,486 2,871,223
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 16,024 $7,902 45,805,005 7,111,724
Widening & rehabilitation 4,992 $268 21,905,965 796,518
Rehabilitation 83 $14 280,110 41,734
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 355 $8 300,097 68,335
Total 21,454 $8,191 68,291,177 8,018,310

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.

9
from 9 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
8. Puerto Rico 11.7%
9. Oklahoma 11.0%
10. North Dakota 10.8%

3
from 3 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
2. Pennsylvania 3,770
3. Oklahoma 2,540
4. Illinois 2,273
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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