US Bridges

I-25 Sbl over US-380

Fair

Socorro County, New Mexico · Junction of I-25/US-380 · Structure no. 000000000006455

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
134 ft
3 main spans
Daily traffic
6,530
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over US-380 is a steel continuous stringer/multi-beam or girder carrying I-25 Sbl over US-380 in Socorro County, New Mexico. It was built in 1964, so it is 61 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 6,530 vehicles a day, roughly 45% of them trucks, projected to reach 8,880 by 2043. The structure is 134 ft (40.8 m) long and 42 ft wide.

CarriesI-25 Sbl
CrossesUS-380
LocationJunction of I-25/US-380
RouteInterstate 25
Coordinates33.9179, -106.8796
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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating30.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span51 ft (15.4 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,530 (2023)
Projected traffic8,880 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Sbl over US-380 built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-25 Sbl over US-380 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 I-25 Sbl over US-380 carry?

About 6,530 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over US-380?

The structure is 134 ft (40.8 m) long with a longest span of 51 ft (15.4 m) and a deck 42 ft wide.

Who owns I-25 Sbl over US-380?

It is owned by the State Highway Agency.