US Bridges

I-25 Nbl/Sbl over Lumber Canyon

Fair

Sierra County, New Mexico · 3.1 Miles S of Exist 100 · Structure no. 000000000006875

Built
1967
58 years old, rebuilt 1979
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
74 ft
7 main spans
Daily traffic
5,806
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl/Sbl over Lumber Canyon is a concrete culvert carrying I-25 Nbl/Sbl over Lumber Canyon in Sierra County, New Mexico. It was built in 1967 and reconstructed in 1979, 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 5,806 vehicles a day, roughly 45% of them trucks, projected to reach 7,896 by 2043. The structure is 74 ft (22.6 m) long. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesI-25 Nbl/Sbl
CrossesLumber Canyon
Location3.1 Miles S of Exist 100
RouteInterstate 25
CountySierra County
StateNew Mexico
Coordinates33.40398, -107.26175
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length74 ft (22.6 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 traffic5,806 (2023)
Projected traffic7,896 by 2043
Trucks45%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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$1.6 million (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Nbl/Sbl over Lumber Canyon built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1979.

What condition is I-25 Nbl/Sbl over Lumber Canyon 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 2024.

How much traffic does I-25 Nbl/Sbl over Lumber Canyon carry?

About 5,806 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Nbl/Sbl over Lumber Canyon?

The structure is 74 ft (22.6 m) long with a longest span of 10 ft (3 m).

Who owns I-25 Nbl/Sbl over Lumber Canyon?

It is owned by the State Highway Agency.