US Bridges

S.H. 51 W.B. over Stillwater Creek

Fair

Payne County, Oklahoma · 2.9 MI W JCT US 177 · Structure no. 187740000000000

Built
1974
51 years old, rebuilt 2007
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
305 ft
3 main spans
Daily traffic
7,100
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 51 W.B. over Stillwater Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 51 W.B. over Stillwater Creek in Payne County, Oklahoma. It was built in 1974 and reconstructed in 2007, so it is 51 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 5 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 7,100 vehicles a day, roughly 15% of them trucks, projected to reach 11,360 by 2042. The structure is 305 ft (93 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesS.H. 51 W.B.
CrossesStillwater Creek
Location2.9 MI W JCT US 177
RouteState Highway 51
CountyPayne County
StateOklahoma
Coordinates36.11611, -97.10278
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.7 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length305 ft (93 m)
Longest span100 ft (30.5 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2022)
Projected traffic11,360 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 51 W.B. over Stillwater Creek built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2007.

What condition is S.H. 51 W.B. over Stillwater 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 January 2024.

How much traffic does S.H. 51 W.B. over Stillwater Creek carry?

About 7,100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 51 W.B. over Stillwater Creek?

The structure is 305 ft (93 m) long with a longest span of 100 ft (30.5 m) and a deck 44 ft wide.

Who owns S.H. 51 W.B. over Stillwater Creek?

It is owned by the State Highway Agency.