US Bridges

NM-283 over I-25 Nbl/Sbl

Fair

San Miguel County, New Mexico · 0.9 M S of S Vegas Intrch · Structure no. 000000000007331

Built
1973
52 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
251 ft
4 main spans
Daily traffic
448
2023 count
Owner
State
State Highway Agency

About this bridge

NM-283 over I-25 Nbl/Sbl is a prestressed concrete stringer/multi-beam or girder carrying NM-283 over I-25 Nbl/Sbl in San Miguel County, New Mexico. It was built in 1973, so it is 52 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 448 vehicles a day, roughly 11% of them trucks, projected to reach 609 by 2043. The structure is 251 ft (76.5 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesNM-283
CrossesI-25 Nbl/Sbl
Location0.9 M S of S Vegas Intrch
RouteState Highway 283
CountySan Miguel County
StateNew Mexico
Coordinates35.5571, -105.22491
Functional classUrban Collector

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 inspectionJuly 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating32.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length251 ft (76.5 m)
Longest span85 ft (25.9 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic448 (2023)
Projected traffic609 by 2043
Trucks11%
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-283 over I-25 Nbl/Sbl built?

It was built in 1973, making it 52 years old in 2025.

What condition is NM-283 over I-25 Nbl/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 July 2024.

How much traffic does NM-283 over I-25 Nbl/Sbl carry?

About 448 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-283 over I-25 Nbl/Sbl?

The structure is 251 ft (76.5 m) long with a longest span of 85 ft (25.9 m) and a deck 35 ft wide.

Who owns NM-283 over I-25 Nbl/Sbl?

It is owned by the State Highway Agency.