US Bridges

S.H. 11 over Little Antelope Creek

Fair

Grant County, Oklahoma · 1.1 MI E JCT SH 74 · Structure no. 039740000000000

Built
1933
92 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
1,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 11 over Little Antelope Creek is a concrete culvert carrying S.H. 11 over Little Antelope Creek in Grant County, Oklahoma. It was built in 1933, so it is 92 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 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 1,400 vehicles a day, roughly 16% of them trucks, projected to reach 2,240 by 2042. The structure is 43 ft (13.1 m) long and 39 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

Open in Google Maps
CarriesS.H. 11
CrossesLittle Antelope Creek
Location1.1 MI E JCT SH 74
RouteState Highway 11
CountyGrant County
StateOklahoma
Coordinates36.8107, -97.53354
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2022)
Projected traffic2,240 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 11 over Little Antelope Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is S.H. 11 over Little Antelope 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 over Little Antelope Creek carry?

About 1,400 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is S.H. 11 over Little Antelope Creek?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 39 ft wide.

Who owns S.H. 11 over Little Antelope Creek?

It is owned by the State Highway Agency.