US Bridges

I-40 WB over Corn Road under

Good

Custer County, Oklahoma · 7.3 MI E I-40 Bus · Structure no. 164710000000000

Built
1965
60 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
11,250
2022 count
Owner
State
State Highway Agency

About this bridge

I-40 WB over Corn Road under is a concrete continuous slab carrying I-40 WB over Corn Road under in Custer County, Oklahoma. It was built in 1965, so it is 60 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,250 vehicles a day, roughly 36% of them trucks, projected to reach 18,000 by 2042. The structure is 102 ft (31.1 m) long and 40 ft wide.

Location

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CarriesI-40 WB
CrossesCorn Road under
Location7.3 MI E I-40 Bus
RouteInterstate 40
CountyCuster County
StateOklahoma
Coordinates35.52241, -98.78228
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,250 (2022)
Projected traffic18,000 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 WB over Corn Road under built?

It was built in 1965, making it 60 years old in 2025.

What condition is I-40 WB over Corn Road under in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does I-40 WB over Corn Road under carry?

About 11,250 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-40 WB over Corn Road under?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 40 ft wide.

Who owns I-40 WB over Corn Road under?

It is owned by the State Highway Agency.