US Bridges

S.H. 156 over Cowskin Creek

Good

Kay County, Oklahoma · 2.6 N Noble C/L · Structure no. 316550000000000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
71 ft
3 main spans
Daily traffic
930
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 156 over Cowskin Creek is a concrete culvert carrying S.H. 156 over Cowskin Creek in Kay County, Oklahoma. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 930 vehicles a day, roughly 15% of them trucks, projected to reach 1,488 by 2042. The structure is 71 ft (21.6 m) long and 87 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesS.H. 156
CrossesCowskin Creek
Location2.6 N Noble C/L
RouteState Highway 156
CountyKay County
StateOklahoma
Coordinates36.63306, -97.13861
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.
Culvert9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.7 US tons
Inventory rating76.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span16 ft (4.9 m)
Deck width87 ft (26.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2022)
Projected traffic1,488 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 156 over Cowskin Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is S.H. 156 over Cowskin Creek 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 October 2023.

How much traffic does S.H. 156 over Cowskin Creek carry?

About 930 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 156 over Cowskin Creek?

The structure is 71 ft (21.6 m) long with a longest span of 16 ft (4.9 m) and a deck 87 ft wide.

Who owns S.H. 156 over Cowskin Creek?

It is owned by the State Highway Agency.