US Bridges

S.H. 8B over Eagle Chief Creek

Good

Alfalfa County, Oklahoma · .5 W JCT S.H. 8 · Structure no. 313680000000000

Built
2017
8 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
245 ft
2 main spans
Daily traffic
650
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 8B over Eagle Chief Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 8B over Eagle Chief Creek in Alfalfa County, Oklahoma. It was built in 2017, so it is 8 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 650 vehicles a day, roughly 18% of them trucks, projected to reach 910 by 2042. The structure is 245 ft (74.7 m) long and 42 ft wide. If it were closed, the detour would be 123 mi (198 km).

Location

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CarriesS.H. 8B
CrossesEagle Chief Creek
Location.5 W JCT S.H. 8
RouteState Highway 8B
CountyAlfalfa County
StateOklahoma
Coordinates36.50639, -98.44056
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: 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 rating48.4 US tons
Inventory rating37.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadHL 93
Structure length245 ft (74.7 m)
Longest span95 ft (29 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2022)
Projected traffic910 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 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. 8B over Eagle Chief Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is S.H. 8B over Eagle Chief 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 May 2023.

How much traffic does S.H. 8B over Eagle Chief Creek carry?

About 650 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is S.H. 8B over Eagle Chief Creek?

The structure is 245 ft (74.7 m) long with a longest span of 95 ft (29 m) and a deck 42 ft wide.

Who owns S.H. 8B over Eagle Chief Creek?

It is owned by the State Highway Agency.