US Bridges

I-40 over U.S. 177 under

Fair

Pottawatomie County, Oklahoma · 8.1 MI E Ok C/L · Structure no. 153580000000000

Built
1961
64 years old, rebuilt 1980
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
178 ft
4 main spans
Daily traffic
17,450
2022 count
Owner
State
State Highway Agency

About this bridge

I-40 over U.S. 177 under is a steel stringer/multi-beam or girder carrying I-40 over U.S. 177 under in Pottawatomie County, Oklahoma. It was built in 1961 and reconstructed in 1980, so it is 64 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 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 17,450 vehicles a day, roughly 36% of them trucks, projected to reach 27,920 by 2042. The structure is 178 ft (54.3 m) long and 54 ft wide.

Location

Open in Google Maps
CarriesI-40
CrossesU.S. 177 under
Location8.1 MI E Ok C/L
RouteInterstate 40
CountyPottawatomie County
StateOklahoma
Coordinates35.38333, -97.00094
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span56 ft (17.1 m)
Deck width54 ft (16.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic17,450 (2022)
Projected traffic27,920 by 2042
Trucks36%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 over U.S. 177 under built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1980.

What condition is I-40 over U.S. 177 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 May 2023.

How much traffic does I-40 over U.S. 177 under carry?

About 17,450 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-40 over U.S. 177 under?

The structure is 178 ft (54.3 m) long with a longest span of 56 ft (17.1 m) and a deck 54 ft wide.

Who owns I-40 over U.S. 177 under?

It is owned by the State Highway Agency.