US Bridges

S.H. 7 Duncan Bypa over Claridy Creek

Fair

Stephens County, Oklahoma · .6 Mi. W of US81 · Structure no. 257070000000000

Built
2001
24 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
51 ft
3 main spans
Daily traffic
4,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 7 Duncan Bypa over Claridy Creek is a concrete culvert carrying S.H. 7 Duncan Bypa over Claridy Creek in Stephens County, Oklahoma. It was built in 2001, so it is 24 years old, younger 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 4,400 vehicles a day, roughly 7% of them trucks, projected to reach 7,040 by 2042. The structure is 51 ft (15.5 m) long. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesS.H. 7 Duncan Bypa
CrossesClaridy Creek
Location.6 Mi. W of US81
RouteState Highway 7P
CountyStephens County
StateOklahoma
Coordinates34.4905, -97.97181
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 protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2022)
Projected traffic7,040 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 7 Duncan Bypa over Claridy Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is S.H. 7 Duncan Bypa over Claridy 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 Duncan Bypa over Claridy Creek carry?

About 4,400 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is S.H. 7 Duncan Bypa over Claridy Creek?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (4.9 m).

Who owns S.H. 7 Duncan Bypa over Claridy Creek?

It is owned by the State Highway Agency.