US Bridges

S.H. 7 over Willow Creek

Fair

Stephens County, Oklahoma · 0.9 MI E US 81 Duncan · Structure no. 184420000000000

Built
1973
52 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
9,100
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 7 over Willow Creek is a concrete culvert carrying S.H. 7 over Willow Creek in Stephens County, Oklahoma. It was built in 1973, so it is 52 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 9,100 vehicles a day, roughly 7% of them trucks, projected to reach 14,560 by 2042. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesS.H. 7
CrossesWillow Creek
Location0.9 MI E US 81 Duncan
RouteState Highway 7
CountyStephens County
StateOklahoma
Coordinates34.49158, -97.95406
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.3 US tons
Inventory rating55.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2022)
Projected traffic14,560 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 7 over Willow Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is S.H. 7 over Willow Creek 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 2024.

How much traffic does S.H. 7 over Willow Creek carry?

About 9,100 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is S.H. 7 over Willow Creek?

The structure is 41 ft (12.5 m) long with a longest span of 10 ft (3 m).

Who owns S.H. 7 over Willow Creek?

It is owned by the State Highway Agency.