US Bridges

NM-122 over Unnamed Waterway

Good

Cibola County, New Mexico · 2.1 MI W of NM-605 · Structure no. 000000000005665

Built
1952
73 years old, rebuilt 1955
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
1,576
2023 count
Owner
State
State Highway Agency

About this bridge

NM-122 over Unnamed Waterway is a concrete culvert carrying NM-122 over Unnamed Waterway in Cibola County, New Mexico. It was built in 1952 and reconstructed in 1955, so it is 73 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 1,576 vehicles a day, roughly 11% of them trucks, projected to reach 2,143 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNM-122
CrossesUnnamed Waterway
Location2.1 MI W of NM-605
RouteState Highway 122
Coordinates35.22468, -107.92092
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,576 (2023)
Projected traffic2,143 by 2043
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$169,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-122 over Unnamed Waterway built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1955.

What condition is NM-122 over Unnamed Waterway 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 March 2024.

How much traffic does NM-122 over Unnamed Waterway carry?

About 1,576 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-122 over Unnamed Waterway?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns NM-122 over Unnamed Waterway?

It is owned by the State Highway Agency.