National Bridge Inventory: New Mexico



  • Of the 4,024 bridges in the state, 207, or 5.1 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 250 bridges classified as structurally deficient in 2016.
  • The deck area of structurally deficient bridges accounts for 5.1 percent of total deck area on all structures.
  • 26 of the structurally deficient bridges are on the Interstate Highway System. A total of 84.1 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.
  • 171 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 1,566 bridges at an estimated cost of $901.0 million.
  • This compares to 1,599 bridges that needed work in 2016.

County Year Built Daily Crossings Type of Bridge Location
Bernalillo 1961 117,053 Urban Interstate I-25 NBL over Gibson Blvd
Bernalillo 1963 85,959 Urban Interstate I-25 SBL over NM-5 / Rio Bravo
Bernalillo 1968 36,216 Urban other principal arterial FL-45 NBL over I-40 EBL and WBL
Bernalillo 1976 33,717 Rural Interstate I-40 EBL over Sedillo Hill Road
Santa Fe 1974 29,332 Urban Interstate I-25 NBL over Sf Southern R/R
Santa Fe 1974 27,485 Urban Interstate I-25 SBL over Sf Southern R/R
Santa Fe 1975 26,648 Rural Interstate I-25 NBL over Arroyo Hondo Rd
Valencia 1974 24,389 Urban other principal arterial Main Street Bridge (NM-6 over the Rio Grande)
McKinley 1963 24,103 Rural Interstate I-40 EBL over BNSF R/R Spur
McKinley 1963 24,103 Rural Interstate I-40 EBL over BNSF R/R
McKinley 1963 24,103 Rural Interstate I-40 EBL over Gov Ord Base/Local Rd.
McKinley 1963 24,103 Rural Interstate I-40 WB over BNSF R/R Spur
Dona Ana 2004 23,406 Urban Interstate I-10 WB over NM-101, NM-478, BNSF R/R
Dona Ana 1957 22,710 Urban other principal arterial US-70 EBL over Alameda Arroyo
Dona Ana 2004 20,090 Urban Interstate I-10 EBL over NM-101,NM-478, BNSF RR
McKinley 1950 19,713 Rural Interstate I-40 WBL over Rio Puerco of The West
San Juan 1936 18,621 Urban minor arterial Irr/US64/491 WBL over San Juan River
Bernalillo 1969 18,131 Urban other principal arterial FL-4048 over North Diversion Channel
Luna 1968 17,664 Rural Interstate I-10 WBL over Unnamed Waterway
Grant 1948 14,320 Rural arterial US-180 over Cameron Creek
Socorro 1971 9,106 Rural Interstate I-25 SBL over Matanza Arroyo
Socorro 1964 9,106 Rural Interstate I-25 SBL over Walnut Creek
Socorro 1964 9,106 Rural Interstate I-25 NBL over Walnut Creek
Socorro 1939 9,106 Rural Interstate I-25 SBL over Madera Canyon
Grant 1961 9,030 Urban minor arterial NM-90 over Pinos Altos 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 574 315,231 8,439,046 20 11,389 271,126
Rural arterial 598 290,351 3,496,461 6 9,868 37,023
Rural minor arterial 470 180,319 977,853 18 7,462 23,182
Rural major collector 487 176,291 497,192 40 11,107 31,099
Rural minor collector 326 124,076 136,155 37 12,834 9,453
Rural local road 433 76,599 99,829 53 7,443 11,225
Urban Interstate 293 333,615 17,702,213 6 8,870 303,325
Urban freeway/expressway 20 16,669 577,206 0 0 0
Urban other principal arterial 334 367,067 6,631,999 5 11,158 102,656
Urban minor arterial 161 102,735 1,263,237 8 10,573 43,104
Urban collector 193 86,861 785,446 10 2,482 29,218
Urban local road 135 37,236 88,611 4 201 997
Total 4,024 2,107,051 40,695,248 207 93,387 862,408
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 189 $117 1,238,066 59,914
Widening & rehabilitation 27 $19 562,684 15,319
Rehabilitation 1,231 $667 9,171,632 524,919
Deck rehabilitation/replacement 62 $67 635,610 52,907
Other structural work 57 $31 116,626 22,979
Total 1,566 $901 11,724,618 676,038

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.

34
Compared to 32 in 2019

in the nation in % of structurally deficient bridges

1. West Virginia 21.2%
33. Kansas 5.3%
34. New Mexico 5.1%
35. Arkansas 5.1%

43
Compared to 42 in 2019

in the nation in # of structurally deficient bridges

1. Iowa 4,571
42. New Hampshire 215
43. New Mexico 207
44. Rhode Island 148

32
Compared to 32 in 2019

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 21.0%
31. Tennessee 5.0%
32. New Mexico 4.0%
33. North Dakota 4.0%
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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