US Bridges

NM-122 Wbl over BNSF Railroad

Good

Cibola County, New Mexico · 2.9 MI E of NM-53/GRANTS · Structure no. 000000000005981

Built
1959
66 years old, rebuilt 2004
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
190 ft
3 main spans
Daily traffic
8,232
2023 count
Owner
State
State Highway Agency

About this bridge

NM-122 Wbl over BNSF Railroad is a steel continuous stringer/multi-beam or girder carrying NM-122 Wbl over BNSF Railroad in Cibola County, New Mexico. It was built in 1959 and reconstructed in 2004, so it is 66 years old, older than the New Mexico average of 51.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,232 vehicles a day, roughly 17% of them trucks, projected to reach 11,195 by 2043. The structure is 190 ft (57.9 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNM-122 Wbl
CrossesBNSF Railroad
Location2.9 MI E of NM-53/GRANTS
RouteState Highway 122
Coordinates35.13728, -107.8279
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span73 ft (22.3 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,232 (2023)
Projected traffic11,195 by 2043
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$780,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-122 Wbl over BNSF Railroad built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2004.

What condition is NM-122 Wbl over BNSF Railroad in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does NM-122 Wbl over BNSF Railroad carry?

About 8,232 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is NM-122 Wbl over BNSF Railroad?

The structure is 190 ft (57.9 m) long with a longest span of 73 ft (22.3 m) and a deck 32 ft wide.

Who owns NM-122 Wbl over BNSF Railroad?

It is owned by the State Highway Agency.