National Bridge Inventory: Arizona



  • The state has identified needed repairs on 1,632 bridges.
  • This compares to 1,691 bridges that needed work in 2021.
  • Over the life of the IIJA, Arizona will receive a total of $225.0 million in bridge formula funds, which will help make needed repairs.
  • Arizona currently has access to $180.0 million of that total, and has committed $121.5 million towards 17 projects as of June 2025.
  • Of the 8,587 bridges in the state, 95, or 1.1 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 117 bridges classified as structurally deficient in 2021.
  • The deck area of structurally deficient bridges accounts for 1.0 percent of total deck area on all structures.

Top Most Traveled Structurally Deficient Bridges in Arizona

County Year Built Daily Crossings Type of Bridge Location
Pima 1966 56,965 Urban Interstate I 10; WB over Fas 317; Cortero Rd
Pima 1966 39,799 Urban minor arterial 22nd Street over SPRR; Aviation Hwy
Maricopa 1976 37,601 Urban other principal arterial Shea Boulevard over Indian Bend Wash
Mohave 1967 32,192 Rural Interstate I 15 over Virgin River
Navajo 1969 21,131 Rural Interstate I-40 WB over SB 40
Mohave 1972 17,105 Rural Interstate I 15; NB over Virgin River
Mohave 1973 14,906 Rural Interstate I 15; SB over Virgin River
Apache 1964 10,415 Rural Interstate IRR I 40; WB over Window Rock Rd
Mohave 1976 8,689 Rural Interstate I 40; EB over Willow Creek
Yuma 1978 8,350 Rural Interstate I 8 EB over Colo R Pentntry Av Sptco
Pinal 1949 8,079 Rural arterial US 60 over Queen Creek
Pinal 1929 8,079 Rural arterial US 60 over Waterfall Canyon
Maricopa 1957 6,978 Rural Interstate I-8 EB over Gillespie Canal
Cochise 1960 6,156 Rural minor arterial SR 80 over San Pedro River
Yavapai 1977 5,844 Rural minor arterial SR 169 over Ash Creek
Gila 1920 5,162 Urban collector Jesse Hayes Rd over Pinal Creek
Coconino 1936 4,618 Rural arterial SR 64 over Red Lake Wash
Navajo 1990 4,078 Rural major collector IRR BIA Rte N4 over Wepo Wash
Yuma 1965 3,550 Urban minor arterial IRR BIA Rte 31 over Southern Pacific RR
Pima 1960 3,531 Rural major collector Trico Road over Brawley Wash
La Paz 1962 3,000 Rural major collector IRR BIA Rte 1 over Main Drain
Pima 1959 2,718 Rural major collector Trico-Marana Road over Santa Cruz River
Santa Cruz 1920 2,473 Rural minor collector Elgin Road over Babocomari Creek
La Paz 1934 2,097 Rural minor arterial US 60 over Centennial Wash
Navajo 1986 2,051 Rural minor arterial IRR BIA Rte N15 over Black Canyon Wash

Bridge Inventory: Arizona

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 1,115 526,682 16,294,267 8 20,703 119,766
Rural arterial 824 501,265 7,100,212 3 2,397 20,776
Rural minor arterial 1,009 342,904 5,005,115 13 6,361 20,368
Rural major collector 680 302,551 1,150,182 16 5,984 23,680
Rural minor collector 381 109,937 282,081 15 5,658 9,424
Rural local road 670 216,099 720,764 34 5,716 5,961
Urban Interstate 412 722,352 22,639,033 1 731 56,965
Urban freeway/expressway 471 1,149,861 30,008,928 0 0 0
Urban other principal arterial 519 582,104 12,514,539 1 2,126 37,601
Urban minor arterial 1,105 1,191,837 19,750,865 2 9,928 43,349
Urban collector 747 344,615 4,178,259 1 453 5,162
Urban local road 654 240,379 1,454,689 1 150 1,500
Total 8,587 6,230,587 121,098,934 95 60,206 344,552

Proposed Bridge Work

Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 1,172 $2,194 21,558,006 666,270
Widening & rehabilitation 177 $182 4,207,728 80,294
Rehabilitation 157 $355 2,508,017 161,513
Deck rehabilitation/replacement 24 $44 265,905 18,483
Other structural work 102 $226 3,626,557 104,302
Total 1,632 $3,001 32,166,213 1,030,863

About the data:

Data and cost estimates are from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on June 24, 2025. 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 2023 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 51 in 2024

in the nation in % of structurally deficient bridges

1. Iowa 19.0%
50. Delaware 1.0%
51. Arizona 1.0%

48
Compared to 46 in 2024

in the nation in # of structurally deficient bridges

1. Iowa 4,424
47. Utah 109
48. Arizona 95
49. Hawaii 67

51
Compared to 49 in 2024

in the nation in % of structurally deficient bridge deck area

1. West Virginia 13.0%
50. Georgia 1.0%
51. Arizona 1.0%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on June 24, 2025. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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