US Bridges

I-25 Sbl over Nogal Canyon

Fair

Socorro County, New Mexico · 4.2 MI N of Sierra Cl · Structure no. 000000000006777

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Truss - Deck
Steel
Length
376 ft
1 main span
Daily traffic
6,496
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Nogal Canyon is a steel truss - deck carrying I-25 Sbl over Nogal Canyon in Socorro County, New Mexico. It was built in 1968, so it is 57 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 6,496 vehicles a day, roughly 45% of them trucks, projected to reach 8,834 by 2043. The structure is 376 ft (114.6 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesNogal Canyon
Location4.2 MI N of Sierra Cl
RouteInterstate 25
CountySocorro County
StateNew Mexico
Coordinates33.53324, -107.1916
Functional classRural Principal Arterial - Interstate

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length376 ft (114.6 m)
Longest span265 ft (80.8 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,496 (2023)
Projected traffic8,834 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-25 Sbl over Nogal Canyon built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-25 Sbl 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 May 2023.

How much traffic does I-25 Sbl over Nogal Canyon carry?

About 6,496 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over Nogal Canyon?

The structure is 376 ft (114.6 m) long with a longest span of 265 ft (80.8 m) and a deck 34 ft wide.

Who owns I-25 Sbl over Nogal Canyon?

It is owned by the State Highway Agency.