US Bridges

I-25 Nbl/Sbl over Local Rural Road

Fair

San Miguel County, New Mexico · Onava I/C Exit 356 · Structure no. 000000000006885

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
5,631
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl/Sbl over Local Rural Road is a concrete culvert carrying I-25 Nbl/Sbl over Local Rural Road in San Miguel County, New Mexico. It was built in 1967, so it is 58 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 5,631 vehicles a day, roughly 45% of them trucks, projected to reach 7,658 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 Nbl/Sbl
CrossesLocal Rural Road
LocationOnava I/C Exit 356
RouteInterstate 25
CountySan Miguel County
StateNew Mexico
Coordinates35.69966, -105.10024
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
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length28 ft (8.5 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,631 (2023)
Projected traffic7,658 by 2043
Trucks45%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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$378,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Nbl/Sbl over Local Rural Road built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-25 Nbl/Sbl over Local Rural Road 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 I-25 Nbl/Sbl over Local Rural Road carry?

About 5,631 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Nbl/Sbl over Local Rural Road?

The structure is 28 ft (8.5 m) long with a longest span of 25 ft (7.6 m).

Who owns I-25 Nbl/Sbl over Local Rural Road?

It is owned by the State Highway Agency.