US Bridges

S.H. 7 Duncan Bypa over Stagestand Creek

Fair

Stephens County, Oklahoma · .3 Mi. N of Plato Road · Structure no. 259010000000000

Built
2001
24 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
174 ft
3 main spans
Daily traffic
5,800
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 7 Duncan Bypa over Stagestand Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 7 Duncan Bypa over Stagestand 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 5,800 vehicles a day, roughly 7% of them trucks, projected to reach 9,280 by 2042. The structure is 174 ft (53 m) long and 39 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
CrossesStagestand Creek
Location.3 Mi. N of Plato Road
RouteState Highway 7P
CountyStephens County
StateOklahoma
Coordinates34.54062, -97.99602
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 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 evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating37.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53 m)
Longest span64 ft (19.5 m)
Deck width39 ft (12 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2022)
Projected traffic9,280 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$3.3 million
NavigationNo navigation control on waterway

Frequently asked questions

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

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

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

About 5,800 vehicles per day (2022 count), of which roughly 7% are trucks.

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

The structure is 174 ft (53 m) long with a longest span of 64 ft (19.5 m) and a deck 39 ft wide.

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

It is owned by the State Highway Agency.