US Bridges

S.H. 11 over Powell Creek

Good

Alfalfa County, Oklahoma · 9.2E Jct. US64/SH 8 & 11 · Structure no. 267210000000000

Built
2005
20 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
1,500
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 11 over Powell Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 11 over Powell Creek in Alfalfa County, Oklahoma. It was built in 2005, so it is 20 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,500 vehicles a day, roughly 15% of them trucks, projected to reach 2,400 by 2042. The structure is 106 ft (32.3 m) long and 42 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

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CarriesS.H. 11
CrossesPowell Creek
Location9.2E Jct. US64/SH 8 & 11
RouteState Highway 11
CountyAlfalfa County
StateOklahoma
Coordinates36.81144, -98.19647
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating81.4 US tons
Inventory rating49.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span105 ft (32 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2022)
Projected traffic2,400 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 2005, making it 20 years old in 2025.

What condition is S.H. 11 over Powell 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. 11 over Powell Creek carry?

About 1,500 vehicles per day (2022 count), of which roughly 15% are trucks.

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

The structure is 106 ft (32.3 m) long with a longest span of 105 ft (32 m) and a deck 42 ft wide.

Who owns S.H. 11 over Powell Creek?

It is owned by the State Highway Agency.