US Bridges

I-25 Nbl over Palomas Creek

Fair

Sierra County, New Mexico · 8.1 M N JCT NM-152/I-25 · Structure no. 000000000006844

Built
1968
57 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
368 ft
6 main spans
Daily traffic
8,962
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Palomas Creek is a prestressed concrete stringer/multi-beam or girder carrying I-25 Nbl over Palomas Creek in Sierra County, New Mexico. It was built in 1968, so it is 57 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 8,962 vehicles a day, roughly 45% of them trucks, projected to reach 12,188 by 2043. The structure is 368 ft (112.2 m) long and 41 ft wide.

Location

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CarriesI-25 Nbl
CrossesPalomas Creek
Location8.1 M N JCT NM-152/I-25
RouteInterstate 25
CountySierra County
StateNew Mexico
Coordinates33.06918, -107.30829
Functional classRural 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.
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length368 ft (112.2 m)
Longest span59 ft (18 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,962 (2023)
Projected traffic12,188 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 I-25 Nbl over Palomas Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-25 Nbl over Palomas Creek 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 February 2023.

How much traffic does I-25 Nbl over Palomas Creek carry?

About 8,962 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Nbl over Palomas Creek?

The structure is 368 ft (112.2 m) long with a longest span of 59 ft (18 m) and a deck 41 ft wide.

Who owns I-25 Nbl over Palomas Creek?

It is owned by the State Highway Agency.