US Bridges

IRR/I-25 Nbl over BNSF Railroad

Fair

Bernalillo County, New Mexico · 5.6 MI N JCT I-25/NM-6 · Structure no. 000000000007255

Built
1970
55 years old, rebuilt 1996
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
176 ft
3 main spans
Daily traffic
34,538
2023 count
Owner
State
State Highway Agency

About this bridge

IRR/I-25 Nbl over BNSF Railroad is a prestressed concrete stringer/multi-beam or girder carrying IRR/I-25 Nbl over BNSF Railroad in Bernalillo County, New Mexico. It was built in 1970 and reconstructed in 1996, 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 34,538 vehicles a day, roughly 45% of them trucks, projected to reach 46,971 by 2043. The structure is 176 ft (53.6 m) long and 45 ft wide.

CarriesIRR/I-25 Nbl
CrossesBNSF Railroad
Location5.6 MI N JCT I-25/NM-6
RouteInterstate 25
Coordinates34.88969, -106.72712
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.6 US tons
Inventory rating33.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length176 ft (53.6 m)
Longest span57 ft (17.4 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,538 (2023)
Projected traffic46,971 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR/I-25 Nbl over BNSF Railroad built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1996.

What condition is IRR/I-25 Nbl 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 January 2025.

How much traffic does IRR/I-25 Nbl over BNSF Railroad carry?

About 34,538 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is IRR/I-25 Nbl over BNSF Railroad?

The structure is 176 ft (53.6 m) long with a longest span of 57 ft (17.4 m) and a deck 45 ft wide.

Who owns IRR/I-25 Nbl over BNSF Railroad?

It is owned by the State Highway Agency.