US Bridges

Co. Rd. over I-40 under

Fair

Pottawatomie County, Oklahoma · 7 MI E JCT SH 18 · Structure no. 158140000000000

Built
1963
62 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
212 ft
2 main spans
Daily traffic
150
2022 count
Owner
State
State Highway Agency

About this bridge

Co. Rd. over I-40 under is a steel continuous stringer/multi-beam or girder carrying Co. Rd. over I-40 under in Pottawatomie County, Oklahoma. It was built in 1963, so it is 62 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 150 vehicles a day, roughly 15% of them trucks, projected to reach 240 by 2042. The structure is 212 ft (64.6 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCo. Rd.
CrossesI-40 under
Location7 MI E JCT SH 18
RouteCounty Highway 0
CountyPottawatomie County
StateOklahoma
Coordinates35.3837, -96.78934
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.4 US tons
Inventory rating23.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 15
Structure length212 ft (64.6 m)
Longest span73 ft (22.3 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic240 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Co. Rd. over I-40 under built?

It was built in 1963, making it 62 years old in 2025.

What condition is Co. Rd. 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 June 2023.

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

About 150 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Co. Rd. over I-40 under?

The structure is 212 ft (64.6 m) long with a longest span of 73 ft (22.3 m) and a deck 27 ft wide.

Who owns Co. Rd. over I-40 under?

It is owned by the State Highway Agency.