US Bridges

S.H. 55 over Oak Creek

Fair

Washita County, Oklahoma · 8.2 MI E JCT U.S. 183 · Structure no. 142470000000000

Built
1959
66 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
110
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 55 over Oak Creek is a concrete culvert carrying S.H. 55 over Oak Creek in Washita County, Oklahoma. It was built in 1959, so it is 66 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 110 vehicles a day, roughly 15% of them trucks, projected to reach 176 by 2042. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 26.7 mi (43 km).

Location

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CarriesS.H. 55
CrossesOak Creek
Location8.2 MI E JCT U.S. 183
RouteState Highway 55
CountyWashita County
StateOklahoma
Coordinates35.1625, -98.91677
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating100 US tons
Inventory rating100 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2022)
Projected traffic176 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 55 over Oak Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is S.H. 55 over Oak 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 December 2024.

How much traffic does S.H. 55 over Oak Creek carry?

About 110 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 55 over Oak Creek?

The structure is 27 ft (8.2 m) long with a longest span of 11 ft (3.5 m).

Who owns S.H. 55 over Oak Creek?

It is owned by the State Highway Agency.