US Bridges

NM-1 over Sheep Creek

Fair

Socorro County, New Mexico · 1.8 MI S JCT NM-107/I-25 · Structure no. 000000000003185

Built
1937
88 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
166 ft
17 main spans
Daily traffic
27
2023 count
Owner
State
State Highway Agency

About this bridge

NM-1 over Sheep Creek is a concrete culvert carrying NM-1 over Sheep Creek in Socorro County, New Mexico. It was built in 1937, so it is 88 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 5 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 27 vehicles a day, roughly 11% of them trucks, projected to reach 36 by 2043. The structure is 166 ft (50.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNM-1
CrossesSheep Creek
Location1.8 MI S JCT NM-107/I-25
RouteState Highway 1
Coordinates33.61865, -107.14115
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans17
Design loadH 15
Structure length166 ft (50.6 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic27 (2023)
Projected traffic36 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-1 over Sheep Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is NM-1 over Sheep 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 July 2024.

How much traffic does NM-1 over Sheep Creek carry?

About 27 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-1 over Sheep Creek?

The structure is 166 ft (50.6 m) long with a longest span of 9 ft (2.7 m).

Who owns NM-1 over Sheep Creek?

It is owned by the State Highway Agency.