National Bridge Inventory: Texas



  • Of the 54,682 bridges in the state, 818, or 1.5 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is up from 653 bridges classified as structurally deficient in 2016.
  • The deck area of structurally deficient bridges accounts for 1.5 percent of total deck area on all structures.
  • 50 of the structurally deficient bridges are on the Interstate Highway System. A total of 85.9 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.
  • 2,841 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 11,704 bridges at an estimated cost of $6.3 billion.
  • This compares to 12,304 bridges that needed work in 2016.

County Year Built Daily Crossings Type of Bridge Location
Dallas 2018 175,985 Urban freeway/expressway SH 183 WBml & from over Lp 12
Harris 1973 171,423 Urban Interstate IH 610 over Houston Ship Channel
Harris 1961 106,670 Urban Interstate IH 45 NB over White Oak Bayou
Harris 1964 96,322 Urban Interstate IH 610S EB over Holmes Rd UPRR Theresa
Harris 1958 91,887 Urban Interstate IH 10 WB over McCarty St/US 90A
Harris 1964 90,848 Urban Interstate IH 610S WB over Holmes Rd UPRR & Theresa
Bexar 1962 85,046 Urban Interstate IH 35 NB ML over Eisenhauer Rd
Dallas 1971 81,045 Urban Interstate IH 30 WBml over IH 635
Dallas 1967 76,110 Urban Interstate IH 635 EB over Tap RR
Dallas 1967 76,110 Urban Interstate IH 635 EB over SH 78 & at & Sf RR
Dallas 1967 76,110 Urban Interstate IH 635 WB over Tap RR
Dallas 1970 66,000 Urban other principal arterial Ss348NB to Ih35 NB over IH 35E SB
Dallas 1971 62,860 Urban freeway/expressway US 80 Conn A over US 80
Dallas 1971 62,860 Urban freeway/expressway US 80 Conn B over US 80
Nueces 1959 62,154 Urban freeway/expressway US 181 over C C Ship Channel
Harris 1971 61,798 Urban Interstate IH 10 WB over San Jacinto River
Jefferson 1962 54,546 Urban Interstate IH 10 WB over Conn - Ih10WB to US69SB
Harris 1970 44,730 Urban local road S Braeswood Blvd over Hcfcd Ditch
Orange 1953 36,000 Urban Interstate IH 10 WB over Little Cypress Bayou
Harris 1986 35,579 Urban minor arterial Louetta Rd over Seals Gully
Tarrant 1965 34,052 Urban freeway/expressway US 287 NB over Carey Street
Galveston 1965 33,950 Urban Interstate IH 45 SB over BNSF RR
Galveston 1939 33,950 Urban Interstate IH 45 NB over BNSF RR
Dallas 1971 32,545 Urban Interstate IH 345 SB over IH 30 US 75 Dart Rail
Dallas 1971 32,545 Urban Interstate IH 345 NB over IH 30 US 75 Dart Etc
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 2,261 1,961,711 37,934,168 20 14,991 230,724
Rural arterial 4,825 4,314,786 36,311,080 14 30,248 93,845
Rural minor arterial 3,860 2,695,706 14,220,907 33 60,369 98,112
Rural major collector 8,050 3,278,591 11,785,307 75 44,962 96,226
Rural minor collector 2,487 696,110 1,375,221 27 6,776 17,439
Rural local road 10,307 2,155,822 5,053,761 452 53,828 70,565
Urban Interstate 3,478 9,699,320 196,269,241 30 255,017 1,482,496
Urban freeway/expressway 4,583 13,543,447 149,089,589 34 108,946 975,020
Urban other principal arterial 4,024 5,903,594 66,423,507 19 34,620 297,084
Urban minor arterial 2,847 3,057,209 31,805,013 30 44,484 227,005
Urban collector 2,933 2,563,469 22,381,016 18 58,019 99,200
Urban local road 5,027 2,775,235 18,542,750 66 34,797 245,137
Total 54,682 52,644,999 591,191,560 818 747,057 3,932,853
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 2,896 $1,299 10,457,238 1,234,398
Widening & rehabilitation 74 $32 1,126,457 44,980
Rehabilitation 602 $232 2,705,714 328,211
Deck rehabilitation/replacement 10 $1 1,564 1,664
Other structural work 8,122 $4,691 82,082,559 6,606,262
Total 11,704 $6,255 96,373,532 8,215,516

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.

51
Compared to 52 in 2019

in the nation in % of structurally deficient bridges

1. West Virginia 21.2%
50. Arizona 1.6%
51. Texas 1.5%

21
Compared to 22 in 2019

in the nation in # of structurally deficient bridges

1. Iowa 4,571
20. Tennessee 881
21. Texas 818
22. South Carolina 745

49
Compared to 50 in 2019

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 21.0%
48. Arizona 2.0%
49. Texas 1.0%
50. Florida 1.0%
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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