US Bridges

NM-1 over Nogal Canyon

Fair

Socorro County, New Mexico · 4.8 MI N of Sierra C/L · Structure no. 000000000001791

Built
1937
88 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
204 ft
5 main spans
Daily traffic
27
2023 count
Owner
State
State Highway Agency

About this bridge

NM-1 over Nogal Canyon is a steel stringer/multi-beam or girder carrying NM-1 over Nogal Canyon 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 204 ft (62.2 m) long and 27 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesNM-1
CrossesNogal Canyon
Location4.8 MI N of Sierra C/L
RouteState Highway 1
CountySocorro County
StateNew Mexico
Coordinates33.54073, -107.20349
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating29.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length204 ft (62.2 m)
Longest span39 ft (11.9 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2023)
Projected traffic36 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$367,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-1 over Nogal Canyon built?

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

What condition is NM-1 over Nogal Canyon 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 March 2024.

How much traffic does NM-1 over Nogal Canyon carry?

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

How long is NM-1 over Nogal Canyon?

The structure is 204 ft (62.2 m) long with a longest span of 39 ft (11.9 m) and a deck 27 ft wide.

Who owns NM-1 over Nogal Canyon?

It is owned by the State Highway Agency.