US Bridges

NM-1 over Unnamed Waterway

Fair

Socorro County, New Mexico · 2.8 MI S of JCT US-380 · Structure no. 000000000003190

Built
1943
82 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
174
2023 count
Owner
State
State Highway Agency

About this bridge

NM-1 over Unnamed Waterway is a concrete culvert carrying NM-1 over Unnamed Waterway in Socorro County, New Mexico. It was built in 1943, so it is 82 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 174 vehicles a day, roughly 10% of them trucks, projected to reach 236 by 2043. The structure is 42 ft (12.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNM-1
CrossesUnnamed Waterway
Location2.8 MI S of JCT US-380
RouteState Highway 1
Coordinates33.87874, -106.87201
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length42 ft (12.7 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 traffic174 (2023)
Projected traffic236 by 2043
Trucks10%
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 Unnamed Waterway built?

It was built in 1943, making it 82 years old in 2025.

What condition is NM-1 over Unnamed Waterway 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 February 2023.

How much traffic does NM-1 over Unnamed Waterway carry?

About 174 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NM-1 over Unnamed Waterway?

The structure is 42 ft (12.7 m) long with a longest span of 10 ft (3 m).

Who owns NM-1 over Unnamed Waterway?

It is owned by the State Highway Agency.