US Bridges

State HWY 115 over Flat Creek

Fair

Comanche County, Oklahoma · HWY 115 S of Cache Tee · Structure no. 000021670-00135

Built
1992
33 years old, rebuilt 2011
Condition
Fair
inspected April 2022
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
1,250
2022 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

State HWY 115 over Flat Creek is a concrete culvert carrying State HWY 115 over Flat Creek in Comanche County, Oklahoma. It was built in 1992 and reconstructed in 2011, so it is 33 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 1,250 vehicles a day, roughly 1% of them trucks, projected to reach 1,250 by 2042. The structure is 24 ft (7.3 m) long and 43 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesState HWY 115
CrossesFlat Creek
LocationHWY 115 S of Cache Tee
RouteState Highway 115
CountyComanche County
StateOklahoma
Coordinates34.6855, -98.63133
Functional classRural Local

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 inspectionApril 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic1,250 (2022)
Projected traffic1,250 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State HWY 115 over Flat Creek built?

It was built in 1992, making it 33 years old in 2025. It was reconstructed in 2011.

What condition is State HWY 115 over Flat 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 April 2022.

How much traffic does State HWY 115 over Flat Creek carry?

About 1,250 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is State HWY 115 over Flat Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 43 ft wide.

Who owns State HWY 115 over Flat Creek?

It is owned by the Bureau of Fish and Wildlife.