US Bridges

NM-1 over Unnamed Waterway

Fair

Socorro County, New Mexico · 7.6 MI N of JCT US-380 · Structure no. 000000000003196

Built
1939
86 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
32 ft
5 main spans
Daily traffic
1,286
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 1939, so it is 86 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 1,286 vehicles a day, roughly 11% of them trucks, projected to reach 1,748 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNM-1
CrossesUnnamed Waterway
Location7.6 MI N of JCT US-380
RouteState Highway 1
CountySocorro County
StateNew Mexico
Coordinates34.01773, -106.89541
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 15
Structure length32 ft (9.8 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,286 (2023)
Projected traffic1,748 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$14,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-1 over Unnamed Waterway built?

It was built in 1939, making it 86 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 April 2024.

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

About 1,286 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-1 over Unnamed Waterway?

The structure is 32 ft (9.8 m) long with a longest span of 6 ft (1.8 m).

Who owns NM-1 over Unnamed Waterway?

It is owned by the State Highway Agency.