US Bridges

I-25 Sbl over Rio Gallinas

Fair

San Miguel County, New Mexico · 1.5 MI S of NM-104 · Structure no. 000000000008238

Built
1982
43 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
290 ft
5 main spans
Daily traffic
9,446
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Rio Gallinas is a prestressed concrete continuous stringer/multi-beam or girder carrying I-25 Sbl over Rio Gallinas in San Miguel County, New Mexico. It was built in 1982, so it is 43 years old, younger 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 9,446 vehicles a day, roughly 45% of them trucks, projected to reach 12,846 by 2043. The structure is 290 ft (88.4 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesRio Gallinas
Location1.5 MI S of NM-104
RouteInterstate 25
CountySan Miguel County
StateNew Mexico
Coordinates35.57393, -105.21359
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length290 ft (88.4 m)
Longest span59 ft (18 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,446 (2023)
Projected traffic12,846 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
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 Rio Gallinas built?

It was built in 1982, making it 43 years old in 2025.

What condition is I-25 Sbl over Rio Gallinas 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 August 2024.

How much traffic does I-25 Sbl over Rio Gallinas carry?

About 9,446 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over Rio Gallinas?

The structure is 290 ft (88.4 m) long with a longest span of 59 ft (18 m) and a deck 45 ft wide.

Who owns I-25 Sbl over Rio Gallinas?

It is owned by the State Highway Agency.