US Bridges

U.S. 270 over N. Canadian River

Good

Blaine County, Oklahoma · 10.2 MI E Dewey C/L · Structure no. 208640000000000

Built
1984
41 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
542 ft
6 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 270 over N. Canadian River is a prestressed concrete stringer/multi-beam or girder carrying U.S. 270 over N. Canadian River in Blaine County, Oklahoma. It was built in 1984, so it is 41 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 2,500 vehicles a day, roughly 25% of them trucks, projected to reach 4,000 by 2042. The structure is 542 ft (165.2 m) long and 40 ft wide.

Location

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CarriesU.S. 270
CrossesN. Canadian River
Location10.2 MI E Dewey C/L
RouteU.S. Route 270
CountyBlaine County
StateOklahoma
Coordinates35.84159, -98.46474
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 rating74 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length542 ft (165.2 m)
Longest span100 ft (30.5 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic4,000 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$3.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 270 over N. Canadian River built?

It was built in 1984, making it 41 years old in 2025.

What condition is U.S. 270 over N. Canadian River 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 January 2024.

How much traffic does U.S. 270 over N. Canadian River carry?

About 2,500 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 270 over N. Canadian River?

The structure is 542 ft (165.2 m) long with a longest span of 100 ft (30.5 m) and a deck 40 ft wide.

Who owns U.S. 270 over N. Canadian River?

It is owned by the State Highway Agency.