US Bridges

U.S. 270 over N. Canadian River

Fair

Blaine County, Oklahoma · 2.2 MI S SH 33 · Structure no. 181340000000000

Built
1971
54 years old, rebuilt 2011
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
402 ft
4 main spans
Daily traffic
5,000
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 270 over N. Canadian River is a steel continuous stringer/multi-beam or girder carrying U.S. 270 over N. Canadian River in Blaine County, Oklahoma. It was built in 1971 and reconstructed in 2011, so it is 54 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,000 vehicles a day, roughly 25% of them trucks, projected to reach 8,000 by 2042. The structure is 402 ft (122.5 m) long and 73 ft wide. If it were closed, the detour would be 70.2 mi (113 km).

Location

Open in Google Maps
CarriesU.S. 270
CrossesN. Canadian River
Location2.2 MI S SH 33
RouteU.S. Route 270
CountyBlaine County
StateOklahoma
Coordinates35.81291, -98.42083
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length402 ft (122.5 m)
Longest span100 ft (30.5 m)
Deck width73 ft (22.3 m)
Roadway width71 ft (21.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2022)
Projected traffic8,000 by 2042
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.2 mi (113 km)
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$4.9 million
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2011.

What condition is U.S. 270 over N. Canadian River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

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

About 5,000 vehicles per day (2022 count), of which roughly 25% are trucks.

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

The structure is 402 ft (122.5 m) long with a longest span of 100 ft (30.5 m) and a deck 73 ft wide.

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

It is owned by the State Highway Agency.