US Bridges

U.S. 81 over Four Mile Creek

Good

Canadian County, Oklahoma · 0.7 Mi. N. Jct. SH66 · Structure no. 249940000000000

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
8,500
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 81 over Four Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying U.S. 81 over Four Mile Creek in Canadian County, Oklahoma. It was built in 1997, so it is 28 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 8,500 vehicles a day, roughly 7% of them trucks, projected to reach 13,600 by 2042. The structure is 101 ft (30.8 m) long and 65 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

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CarriesU.S. 81
CrossesFour Mile Creek
Location0.7 Mi. N. Jct. SH66
RouteU.S. Route 81
CountyCanadian County
StateOklahoma
Coordinates35.54337, -97.95483
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span97 ft (29.7 m)
Deck width65 ft (19.8 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2022)
Projected traffic13,600 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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$4.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 81 over Four Mile Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is U.S. 81 over Four Mile 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 U.S. 81 over Four Mile Creek carry?

About 8,500 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is U.S. 81 over Four Mile Creek?

The structure is 101 ft (30.8 m) long with a longest span of 97 ft (29.7 m) and a deck 65 ft wide.

Who owns U.S. 81 over Four Mile Creek?

It is owned by the State Highway Agency.