US Bridges

S.H. 15 over Sooner Lake

Good

Pawnee County, Oklahoma · 1 MI E of JCT US177 · Structure no. 195590000000000

Built
1979
46 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
810
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 15 over Sooner Lake is a concrete culvert carrying S.H. 15 over Sooner Lake in Pawnee County, Oklahoma. It was built in 1979, so it is 46 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 810 vehicles a day, roughly 15% of them trucks, projected to reach 1,296 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 26.7 mi (43 km).

CarriesS.H. 15
CrossesSooner Lake
Location1 MI E of JCT US177
RouteState Highway 15
Coordinates36.40425, -97.05103
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic810 (2022)
Projected traffic1,296 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 15 over Sooner Lake built?

It was built in 1979, making it 46 years old in 2025.

What condition is S.H. 15 over Sooner Lake in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does S.H. 15 over Sooner Lake carry?

About 810 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 15 over Sooner Lake?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns S.H. 15 over Sooner Lake?

It is owned by the State Highway Agency.