US Bridges

I-25 Sbl over BNSF Railroad

Fair

Colfax County, New Mexico · 27.7 MI N of JCT US-56 · Structure no. 000000000006915

Built
1970
55 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
179 ft
3 main spans
Daily traffic
6,020
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over BNSF Railroad is a prestressed concrete stringer/multi-beam or girder carrying I-25 Sbl over BNSF Railroad in Colfax County, New Mexico. It was built in 1970, so it is 55 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 6 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 6,020 vehicles a day, roughly 45% of them trucks, projected to reach 8,187 by 2043. The structure is 179 ft (54.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesBNSF Railroad
Location27.7 MI N of JCT US-56
RouteInterstate 25
CountyColfax County
StateNew Mexico
Coordinates36.653, -104.49702
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length179 ft (54.6 m)
Longest span58 ft (17.7 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,020 (2023)
Projected traffic8,187 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 BNSF Railroad built?

It was built in 1970, making it 55 years old in 2025.

What condition is I-25 Sbl over BNSF Railroad 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 September 2023.

How much traffic does I-25 Sbl over BNSF Railroad carry?

About 6,020 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over BNSF Railroad?

The structure is 179 ft (54.6 m) long with a longest span of 58 ft (17.7 m) and a deck 41 ft wide.

Who owns I-25 Sbl over BNSF Railroad?

It is owned by the State Highway Agency.