US Bridges

I-40 Bus. over I-40 under

Fair

Canadian County, Oklahoma · 15.2 Mi. E. Caddo CO · Structure no. 173320000000000

Built
1968
57 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
218 ft
4 main spans
Daily traffic
2,200
2022 count
Owner
State
State Highway Agency

About this bridge

I-40 Bus. over I-40 under is a steel stringer/multi-beam or girder carrying I-40 Bus. over I-40 under in Canadian County, Oklahoma. It was built in 1968, so it is 57 years old, older than the Oklahoma average of 47.8 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 2,200 vehicles a day, roughly 15% of them trucks, projected to reach 3,520 by 2042. The structure is 218 ft (66.5 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesI-40 Bus.
CrossesI-40 under
Location15.2 Mi. E. Caddo CO
RouteState Highway 40B
CountyCanadian County
StateOklahoma
Coordinates35.52929, -98.0439
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length218 ft (66.5 m)
Longest span68 ft (20.7 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2022)
Projected traffic3,520 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$2.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 Bus. over I-40 under built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-40 Bus. over I-40 under 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 November 2024.

How much traffic does I-40 Bus. over I-40 under carry?

About 2,200 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is I-40 Bus. over I-40 under?

The structure is 218 ft (66.5 m) long with a longest span of 68 ft (20.7 m) and a deck 31 ft wide.

Who owns I-40 Bus. over I-40 under?

It is owned by the State Highway Agency.