US Bridges

NM-161 over Wolf Creek

Fair

Mora County, New Mexico · 7.0 MI NW of JCT I-25 N · Structure no. 000000000005715

Built
1955
70 years old
Condition
Fair
inspected May 2024
Type
Channel Beam
Concrete
Length
94 ft
3 main spans
Daily traffic
171
2023 count
Owner
State
State Highway Agency

About this bridge

NM-161 over Wolf Creek is a concrete channel beam carrying NM-161 over Wolf Creek in Mora County, New Mexico. It was built in 1955, so it is 70 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 171 vehicles a day, roughly 11% of them trucks, projected to reach 232 by 2043. The structure is 94 ft (28.7 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-161
CrossesWolf Creek
Location7.0 MI NW of JCT I-25 N
RouteState Highway 161
Coordinates35.89839, -105.01693
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.5 US tons
Inventory rating34 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length94 ft (28.7 m)
Longest span31 ft (9.4 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic171 (2023)
Projected traffic232 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$155,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-161 over Wolf Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is NM-161 over Wolf Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does NM-161 over Wolf Creek carry?

About 171 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-161 over Wolf Creek?

The structure is 94 ft (28.7 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns NM-161 over Wolf Creek?

It is owned by the State Highway Agency.