US Bridges

I-25 Nbl over Mountain Road

Fair

Bernalillo County, New Mexico · 0.5 MI S of JCT I-25/I-40 · Structure no. 000000000005989

Built
1959
66 years old, rebuilt 2002
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
170 ft
3 main spans
Daily traffic
155,949
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Mountain Road is a prestressed concrete continuous stringer/multi-beam or girder carrying I-25 Nbl over Mountain Road in Bernalillo County, New Mexico. It was built in 1959 and reconstructed in 2002, so it is 66 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 155,949 vehicles a day, roughly 14% of them trucks, projected to reach 212,090 by 2043. The structure is 170 ft (51.8 m) long and 82 ft wide.

Location

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CarriesI-25 Nbl
CrossesMountain Road
Location0.5 MI S of JCT I-25/I-40
RouteInterstate 25
CountyBernalillo County
StateNew Mexico
Coordinates35.09356, -106.63357
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating20.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span75 ft (22.9 m)
Deck width82 ft (25 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic155,949 (2023)
Projected traffic212,090 by 2043
Trucks14%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$880,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Nbl over Mountain Road built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2002.

What condition is I-25 Nbl over Mountain Road 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 2024.

How much traffic does I-25 Nbl over Mountain Road carry?

About 155,949 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-25 Nbl over Mountain Road?

The structure is 170 ft (51.8 m) long with a longest span of 75 ft (22.9 m) and a deck 82 ft wide.

Who owns I-25 Nbl over Mountain Road?

It is owned by the State Highway Agency.