US Bridges

I-25 Sbl over BNSF Railroad

Fair

Colfax County, New Mexico · 8.2 MI N US-56 @ Springer · Structure no. 000000000007106

Built
1970
55 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
143 ft
3 main spans
Daily traffic
5,531
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over BNSF Railroad is a steel continuous 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 5,531 vehicles a day, roughly 45% of them trucks, projected to reach 7,522 by 2043. The structure is 143 ft (43.6 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
Location8.2 MI N US-56 @ Springer
RouteInterstate 25
CountyColfax County
StateNew Mexico
Coordinates36.47703, -104.58655
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span54 ft (16.5 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,531 (2023)
Projected traffic7,522 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 March 2023.

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

About 5,531 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over BNSF Railroad?

The structure is 143 ft (43.6 m) long with a longest span of 54 ft (16.5 m) and a deck 41 ft wide.

Who owns I-25 Sbl over BNSF Railroad?

It is owned by the State Highway Agency.