US Bridges

NM-157 over I-25 Nbl and Sbl

Fair

Dona Ana County, New Mexico · 13.2 MI N JCT I-25/US-70 · Structure no. 000000000006668

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
229 ft
5 main spans
Daily traffic
1,786
2023 count
Owner
State
State Highway Agency

About this bridge

NM-157 over I-25 Nbl and Sbl is a prestressed concrete stringer/multi-beam or girder carrying NM-157 over I-25 Nbl and Sbl in Dona Ana County, New Mexico. It was built in 1966, so it is 59 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 1,786 vehicles a day, roughly 17% of them trucks, projected to reach 2,428 by 2043. The structure is 229 ft (69.8 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesNM-157
CrossesI-25 Nbl and Sbl
Location13.2 MI N JCT I-25/US-70
RouteState Highway 157
CountyDona Ana County
StateNew Mexico
Coordinates32.49618, -106.90179
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length229 ft (69.8 m)
Longest span52 ft (15.8 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,786 (2023)
Projected traffic2,428 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-157 over I-25 Nbl and Sbl built?

It was built in 1966, making it 59 years old in 2025.

What condition is NM-157 over I-25 Nbl and Sbl 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 August 2023.

How much traffic does NM-157 over I-25 Nbl and Sbl carry?

About 1,786 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is NM-157 over I-25 Nbl and Sbl?

The structure is 229 ft (69.8 m) long with a longest span of 52 ft (15.8 m) and a deck 34 ft wide.

Who owns NM-157 over I-25 Nbl and Sbl?

It is owned by the State Highway Agency.