US Bridges

I-25 SB over Unnamed Waterway

Fair

Socorro County, New Mexico · 1.8 MI N of Exit 124 · Structure no. 000000000008348

Built
1981
44 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
6,438
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 SB over Unnamed Waterway is a concrete culvert carrying I-25 SB over Unnamed Waterway in Socorro County, New Mexico. It was built in 1981, so it is 44 years old, younger 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 6,438 vehicles a day, roughly 45% of them trucks, projected to reach 8,755 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 SB
CrossesUnnamed Waterway
Location1.8 MI N of Exit 124
RouteInterstate 25
CountySocorro County
StateNew Mexico
Coordinates33.71687, -107.0343
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 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 rating99 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length24 ft (7.3 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 traffic6,438 (2023)
Projected traffic8,755 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$300,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 SB over Unnamed Waterway built?

It was built in 1981, making it 44 years old in 2025.

What condition is I-25 SB over Unnamed Waterway 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 SB over Unnamed Waterway carry?

About 6,438 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 SB over Unnamed Waterway?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns I-25 SB over Unnamed Waterway?

It is owned by the State Highway Agency.