US Bridges

I-25 Sbl over BNSF Railroad

Good

San Miguel County, New Mexico · 1.7 MI S of NM-104 · Structure no. 000000000008236

Built
1982
43 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
183 ft
3 main spans
Daily traffic
9,446
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 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,446 vehicles a day, roughly 45% of them trucks, projected to reach 12,846 by 2043. The structure is 183 ft (55.8 m) long and 45 ft wide.

CarriesI-25 Sbl
CrossesBNSF Railroad
Location1.7 MI S of NM-104
RouteInterstate 25
Coordinates35.57278, -105.21477
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length183 ft (55.8 m)
Longest span60 ft (18.3 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
CrossesRailroad
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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$500,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Sbl over BNSF Railroad built?

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

What condition is I-25 Sbl over BNSF Railroad in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

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

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

How long is I-25 Sbl over BNSF Railroad?

The structure is 183 ft (55.8 m) long with a longest span of 60 ft (18.3 m) and a deck 45 ft wide.

Who owns I-25 Sbl over BNSF Railroad?

It is owned by the State Highway Agency.