US Bridges

I-40 EB over Big Skin Bayou

Fair

Sequoyah County, Oklahoma · 3.2 W JCT US-64B · Structure no. 160500000000000

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
141 ft
3 main spans
Daily traffic
9,250
2022 count
Owner
State
State Highway Agency

About this bridge

I-40 EB over Big Skin Bayou is a steel stringer/multi-beam or girder carrying I-40 EB over Big Skin Bayou in Sequoyah County, Oklahoma. It was built in 1964, so it is 61 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 9,250 vehicles a day, roughly 36% of them trucks, projected to reach 14,800 by 2042. The structure is 141 ft (43 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesI-40 EB
CrossesBig Skin Bayou
Location3.2 W JCT US-64B
RouteInterstate 40
CountySequoyah County
StateOklahoma
Coordinates35.394, -94.65562
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length141 ft (43 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,250 (2022)
Projected traffic14,800 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-40 EB over Big Skin Bayou built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-40 EB over Big Skin Bayou 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 October 2023.

How much traffic does I-40 EB over Big Skin Bayou carry?

About 9,250 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-40 EB over Big Skin Bayou?

The structure is 141 ft (43 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns I-40 EB over Big Skin Bayou?

It is owned by the State Highway Agency.