US Bridges

S.H. 7 Duncan Bypa over Claridy Creek Trib.

Good

Stephens County, Oklahoma · 1.6 Mi. W of US81 · Structure no. 257080000000000

Built
2001
24 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
136 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 Trib. is a prestressed concrete stringer/multi-beam or girder carrying S.H. 7 Duncan Bypa over Claridy Creek Trib. 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,400 vehicles a day, roughly 7% of them trucks, projected to reach 7,040 by 2042. The structure is 136 ft (41.5 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesS.H. 7 Duncan Bypa
CrossesClaridy Creek Trib.
Location1.6 Mi. W of US81
RouteState Highway 7P
CountyStephens County
StateOklahoma
Coordinates34.48744, -97.97596
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating35.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span60 ft (18.3 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2022)
Projected traffic7,040 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$3 million
NavigationNo navigation control on waterway

Frequently asked questions

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

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

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

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does S.H. 7 Duncan Bypa over Claridy Creek Trib. 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 Trib.?

The structure is 136 ft (41.5 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.

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

It is owned by the State Highway Agency.