US Bridges

I-25 Sbl over Willow Creek

Fair

Colfax County, New Mexico · 11.5 MI N of JCT NM-445 · Structure no. 000000000006917

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
3 main spans
Daily traffic
6,576
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Willow Creek is a prestressed concrete stringer/multi-beam or girder carrying I-25 Sbl over Willow Creek in Colfax County, New Mexico. It was built in 1970, so it is 55 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 6,576 vehicles a day, roughly 45% of them trucks, projected to reach 8,943 by 2043. The structure is 134 ft (40.8 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 Sbl
CrossesWillow Creek
Location11.5 MI N of JCT NM-445
RouteInterstate 25
CountyColfax County
StateNew Mexico
Coordinates36.6935, -104.4856
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable 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 spans3
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span43 ft (13.1 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,576 (2023)
Projected traffic8,943 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 Sbl over Willow Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is I-25 Sbl over Willow 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 July 2023.

How much traffic does I-25 Sbl over Willow Creek carry?

About 6,576 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over Willow Creek?

The structure is 134 ft (40.8 m) long with a longest span of 43 ft (13.1 m) and a deck 41 ft wide.

Who owns I-25 Sbl over Willow Creek?

It is owned by the State Highway Agency.