US Bridges

I-40 E/Wbl over Allison RD

Fair

McKinley County, New Mexico · 19.9 MI E of Ariz ST Line · Structure no. 000000000006730

Built
1966
59 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
33 ft
1 main span
Daily traffic
24,312
2023 count
Owner
State
State Highway Agency

About this bridge

I-40 E/Wbl over Allison RD is a concrete culvert carrying I-40 E/Wbl over Allison RD in McKinley County, New Mexico. It was built in 1966, so it is 59 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 5 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 24,312 vehicles a day, roughly 45% of them trucks, projected to reach 33,064 by 2043. The structure is 33 ft (10.1 m) long and 78 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesI-40 E/Wbl
CrossesAllison RD
Location19.9 MI E of Ariz ST Line
RouteInterstate 40
CountyMcKinley County
StateNew Mexico
Coordinates35.52272, -108.77947
Functional classUrban 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
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span25 ft (7.6 m)
Deck width78 ft (23.8 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,312 (2023)
Projected traffic33,064 by 2043
Trucks45%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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$447,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 E/Wbl over Allison RD built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-40 E/Wbl over Allison RD 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 January 2024.

How much traffic does I-40 E/Wbl over Allison RD carry?

About 24,312 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-40 E/Wbl over Allison RD?

The structure is 33 ft (10.1 m) long with a longest span of 25 ft (7.6 m) and a deck 78 ft wide.

Who owns I-40 E/Wbl over Allison RD?

It is owned by the State Highway Agency.