US Bridges

I-25 SB over Dry Arroyo

Fair

Colfax County, New Mexico · 7.7 MI N of JCT US-56 · Structure no. 000000000004981

Built
1941
84 years old, rebuilt 1970
Condition
Fair
inspected April 2021
Type
Culvert
Concrete
Length
100 ft
9 main spans
Daily traffic
5,531
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 SB over Dry Arroyo is a concrete culvert carrying I-25 SB over Dry Arroyo in Colfax County, New Mexico. It was built in 1941 and reconstructed in 1970, so it is 84 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 5,531 vehicles a day, roughly 45% of them trucks, projected to reach 7,522 by 2043. The structure is 100 ft (30.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 SB
CrossesDry Arroyo
Location7.7 MI N of JCT US-56
RouteInterstate 25
CountyColfax County
StateNew Mexico
Coordinates36.4704, -104.59167
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans9
Design loadHS 20 + Mod
Structure length100 ft (30.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,531 (2023)
Projected traffic7,522 by 2043
Trucks45%
Lanes on structure2
Traffic directionTwo-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 SB over Dry Arroyo built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1970.

What condition is I-25 SB over Dry Arroyo 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 April 2021.

How much traffic does I-25 SB over Dry Arroyo carry?

About 5,531 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 SB over Dry Arroyo?

The structure is 100 ft (30.5 m) long with a longest span of 10 ft (3 m).

Who owns I-25 SB over Dry Arroyo?

It is owned by the State Highway Agency.