US Bridges

S.H. 11 a over Creek

Fair

Grant County, Oklahoma · .1 MI N JCT SH 11 · Structure no. 133730000000000

Built
1955
70 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
480
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 11 a over Creek is a concrete culvert carrying S.H. 11 a over Creek in Grant County, Oklahoma. It was built in 1955, so it is 70 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 480 vehicles a day, roughly 15% of them trucks, projected to reach 768 by 2042. The structure is 32 ft (9.8 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesS.H. 11 a
CrossesCreek
Location.1 MI N JCT SH 11
RouteState Highway 11A
CountyGrant County
StateOklahoma
Coordinates36.81204, -97.92981
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.6 US tons
Inventory rating35.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic480 (2022)
Projected traffic768 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 11 a over Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is S.H. 11 a over 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 March 2024.

How much traffic does S.H. 11 a over Creek carry?

About 480 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 11 a over Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns S.H. 11 a over Creek?

It is owned by the State Highway Agency.