US Bridges

NM-371 over Unnamed Waterway

Good

McKinley County, New Mexico · 12.7 Miles N of NM-122 · Structure no. 000000000009500

Built
1958
67 years old, rebuilt 2011
Condition
Good
inspected October 2021
Type
Culvert
Steel
Length
72 ft
3 main spans
Daily traffic
3,698
2023 count
Owner
State
State Highway Agency

About this bridge

NM-371 over Unnamed Waterway is a steel culvert carrying NM-371 over Unnamed Waterway in McKinley County, New Mexico. It was built in 1958 and reconstructed in 2011, so it is 67 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 3,698 vehicles a day, roughly 11% of them trucks, projected to reach 5,029 by 2043. The structure is 72 ft (21.9 m) long. If it were closed, the detour would be 100 mi (161 km).

CarriesNM-371
CrossesUnnamed Waterway
Location12.7 Miles N of NM-122
RouteState Highway 371
Coordinates35.52999, -108.13312
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,698 (2023)
Projected traffic5,029 by 2043
Trucks11%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-371 over Unnamed Waterway built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2011.

What condition is NM-371 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 October 2021.

How much traffic does NM-371 over Unnamed Waterway carry?

About 3,698 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-371 over Unnamed Waterway?

The structure is 72 ft (21.9 m) long with a longest span of 9 ft (2.7 m).

Who owns NM-371 over Unnamed Waterway?

It is owned by the State Highway Agency.