National Bridge Inventory: Arizona



  • Of the 8,294 bridges in the state, 150, or 1.8 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 223 bridges classified as structurally deficient in 2014.
  • 19 of the structurally deficient bridges are on the Interstate Highway System.
  • 195 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 1,944 bridges at an estimated cost of $1.4 billion.
  • This compares to 2,440 bridges that needed work in 2014.

County Year Built Daily Crossings Type of Bridge Location
Pima 1965 60,525 Urban Interstate I 10; EB over Ruthrauff Rd
Maricopa 1976 48,700 Urban other principal arterial Shea Blvd over Indian Bend Wash
Pima 1965 39,052 Urban Interstate I 10; WB over Ajo Way; FAU 8173
Pima 1965 39,052 Urban Interstate I 10; EB over Ajo Way
Coconino 1934 37,366 Urban other principal arterial SB 40 over Rio De Flag
Pima 1966 36,502 Urban Interstate I 10; EB over Country Club Road
Pima 1958 31,534 Rural Interstate I-10 WB over Earp Wash Trib
Pima 1958 31,482 Rural Interstate I-10 EB over Earp Wash Trib
Pima 1960 27,590 Urban Interstate I-10 WB over Wilmot Rd
Pima 1960 27,391 Urban Interstate I-10 EB over Wilmot Rd
Mohave 1964 27,243 Rural Interstate I 15 over Virgin River
Pima 1966 22,721 Urban minor arterial 22nd Street over SPRR; Aviation Hwy
Pima 1968 22,042 Rural Interstate IRR I 19; NB over Pima Mine Rd
Pima 1969 21,588 Rural Interstate IRR I 19; SB over Pima Mine Rd
Pima 1971 20,220 Urban Interstate I 19; SB over El Toro Rd & RR
Mohave 1967 19,136 Rural Interstate I 15 over Virgin River
Pima 1971 13,791 Urban Interstate I 19; NB over El Toro Rd & Uprr
Maricopa 1960 12,600 Urban collector 68th Street over Arizona Canal
Mohave 1973 9,611 Rural Interstate I 15; SB over Virgin River
Apache 1964 8,829 Rural Interstate IRR I 40; WB over Window Rock Rd
Mohave 1978 8,306 Urban other principal arterial S 95 over Colorado River
Mohave 1972 7,815 Rural Interstate I 15; NB over Virgin River
Gila 1949 7,612 Rural arterial US 60 over Pinto Creek
Pinal 1949 7,612 Rural arterial US 60 over Queen Creek
Mohave 1974 7,144 Rural Interstate I-40 WB over Griffith Wash
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 1,237 594,582 18,732,360 11 14,882 191,196
Rural arterial 920 582,285 7,240,790 7 5,628 37,978
Rural minor arterial 699 257,541 2,600,648 12 12,361 21,377
Rural major collector 1,089 457,765 2,385,234 23 13,703 32,243
Rural minor collector 317 100,867 401,563 18 6,027 6,450
Rural local road 772 230,990 457,163 49 15,047 11,178
Urban Interstate 325 636,733 15,989,442 8 7,006 264,123
Urban freeway/expressway 381 930,559 22,949,225 0 0 0
Urban other principal arterial 756 812,124 15,755,818 4 6,372 98,391
Urban minor arterial 649 689,933 9,700,168 3 10,380 31,771
Urban collector 424 300,517 2,647,232 4 2,133 18,400
Urban local road 725 252,281 1,793,271 11 1,918 9,580
Total 8,294 5,846,176 100,652,914 150 95,457 722,687
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 1,458 $1,247 23,345,938 892,420
Widening & rehabilitation 261 $54 4,993,291 90,208
Rehabilitation 81 $79 855,137 117,902
Deck rehabilitation/replacement 15 $3 118,303 7,662
Other structural work 129 $27 3,316,882 61,156
Total 1,944 $1,409 32,629,551 1,169,348

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.

50
from 49 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
49. Utah 2.2%
50. Arizona 1.8%
51. Nevada 1.4%

46
from 45 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
45. Alaska 155
46. Arizona 150
47. Hawaii 78
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