US Bridges

NM-317 over I-25 Nbls/Sbls-Isleta

Fair

Bernalillo County, New Mexico · 6.6 MI N JCT I-25/NM-6 · Structure no. 000000000007257

Built
1971
54 years old, rebuilt 1990
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
285 ft
2 main spans
Daily traffic
2,926
2023 count
Owner
State
State Highway Agency

About this bridge

NM-317 over I-25 Nbls/Sbls-Isleta is a steel continuous stringer/multi-beam or girder carrying NM-317 over I-25 Nbls/Sbls-Isleta in Bernalillo County, New Mexico. It was built in 1971 and reconstructed in 1990, so it is 54 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 5 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 2,926 vehicles a day, roughly 5% of them trucks, projected to reach 3,979 by 2043. The structure is 285 ft (86.9 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNM-317
CrossesI-25 Nbls/Sbls-Isleta
Location6.6 MI N JCT I-25/NM-6
RouteState Highway 317
CountyBernalillo County
StateNew Mexico
Coordinates34.90458, -106.72419
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length285 ft (86.9 m)
Longest span140 ft (42.7 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,926 (2023)
Projected traffic3,979 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 NM-317 over I-25 Nbls/Sbls-Isleta built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1990.

What condition is NM-317 over I-25 Nbls/Sbls-Isleta 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 NM-317 over I-25 Nbls/Sbls-Isleta carry?

About 2,926 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is NM-317 over I-25 Nbls/Sbls-Isleta?

The structure is 285 ft (86.9 m) long with a longest span of 140 ft (42.7 m) and a deck 51 ft wide.

Who owns NM-317 over I-25 Nbls/Sbls-Isleta?

It is owned by the State Highway Agency.