National Bridge Inventory: New Mexico



  • Of the 4,010 bridges in the state, 232, or 5.8 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 273 bridges classified as structurally deficient in 2014.
  • 25 of the structurally deficient bridges are on the Interstate Highway System.
  • 168 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 1,587 bridges at an estimated cost of $569.0 million.
  • This compares to 1,638 bridges that needed work in 2014.

County Year Built Daily Crossings Type of Bridge Location
Bernalillo 1961 112,621 Urban Interstate I-25 NBL over Gibson Blvd
Bernalillo 1963 82,785 Urban Interstate I-25 SBL over NM-5 / Rio Bravo
Bernalillo 1976 32,408 Urban Interstate I-40 EBL over Sedillo Hill Road
Santa Fe 1974 30,186 Urban Interstate I-25 NBL over Sf Southern R/R
Dona Ana 1971 28,291 Urban Interstate I-10 WBL over Ramp E of I-10
Dona Ana 1971 28,291 Urban Interstate I-10 EBL over Ig 1142 Ramp E
Santa Fe 1975 25,218 Rural Interstate I-25 NBL over Arroyo Hondo Rd
Dona Ana 1968 21,461 Urban Interstate I-25 SBL over Missouri Avenue
Valencia 1974 21,235 Rural minor arterial Main Street Bridge (NM-6 over the Rio Grande)
San Juan 1936 20,509 Urban other principal arterial Irr/US64/491 WBL over San Juan River
Bernalillo 1968 19,831 Urban other principal arterial FL-45 NBL over I-40 EBL and WBL
Dona Ana 2004 19,348 Rural Interstate I-10 WB over NM-101, NM-478, BNSF R/R
Dona Ana 2004 19,348 Rural Interstate I-10 EBL over NM-101,NM-478, BNSF RR
Dona Ana 1971 19,143 Urban Interstate I-10 WBL over E. Union Avenue
Dona Ana 1971 19,143 Urban Interstate I-10 EBL over Union Avenue
Bernalillo 1969 16,229 Urban other principal arterial FL-4048 over North Diversion Channel
Grant 1948 14,024 Rural minor arterial US-180 over Cameron Creek
Los Alamos 1951 14,000 Rural arterial Nm501 over Omega Road, West Road
Hidalgo 1974 13,622 Rural Interstate I-10 EBL over NM-494
Bernalillo 1971 13,619 Urban minor arterial FL-5037 over Bear Canyon Arroyo
Bernalillo 1971 13,619 Urban minor arterial FL-5037 over Bear Canyon Arroyo
Santa Fe 1974 13,315 Urban Interstate I-25 SBL over Sf Southern R/R
Bernalillo 1986 11,872 Urban collector FL-6608 over North Diversion Channel
Socorro 1958 11,476 Rural Interstate I-25 NBL over Ojitos Arroyo
Socorro 1939 9,429 Rural Interstate I-25 SBL over Madera Canyon
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 585 343,141 10,685,557 15 12,199 139,436
Rural arterial 523 261,039 3,043,900 9 11,519 30,518
Rural minor arterial 532 246,375 2,401,399 23 17,746 75,124
Rural major collector 449 153,454 659,145 32 9,129 35,605
Rural minor collector 295 120,190 154,386 36 11,761 9,964
Rural local road 440 85,486 525,538 64 10,340 12,212
Urban Interstate 261 295,983 13,479,587 10 7,804 387,644
Urban freeway/expressway 0 0 0 0 0 0
Urban other principal arterial 322 306,097 5,376,941 8 8,580 76,143
Urban minor arterial 214 106,936 1,256,408 10 5,605 49,082
Urban collector 246 134,322 1,396,183 21 5,459 39,443
Urban local road 143 27,936 76,814 4 308 1,126
Total 4,010 2,080,960 39,055,858 232 100,451 856,297
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 202 $128 1,190,173 64,499
Widening & rehabilitation 28 $14 539,665 15,596
Rehabilitation 1,246 $381 9,161,265 530,998
Deck rehabilitation/replacement 63 $39 631,523 52,945
Other structural work 48 $8 110,475 18,905
Total 1,587 $569 11,633,101 682,942

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.

32
from 30 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
31. Indiana 6.2%
32. New Mexico 5.8%
33. Ohio 5.6%

42
from 42 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
41. Wyoming 257
42. New Mexico 232
43. New Hampshire 224
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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