US Bridges

U.S. 270 over Oflow

Good

Pottawatomie County, Oklahoma · 4.4 MI S JCT SH 3 · Structure no. 152890000000000

Built
1961
64 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
11,700
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 270 over Oflow is a concrete culvert carrying U.S. 270 over Oflow in Pottawatomie County, Oklahoma. It was built in 1961, so it is 64 years old, older 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 11,700 vehicles a day, roughly 16% of them trucks, projected to reach 18,720 by 2042. The structure is 41 ft (12.5 m) long and 110 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesU.S. 270
CrossesOflow
Location4.4 MI S JCT SH 3
RouteU.S. Route 270
CountyPottawatomie County
StateOklahoma
Coordinates35.30812, -96.94358
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
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 geometry9: Superior 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 rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span14 ft (4.3 m)
Deck width110 ft (33.5 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,700 (2022)
Projected traffic18,720 by 2042
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$790,000
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 270 over Oflow built?

It was built in 1961, making it 64 years old in 2025.

What condition is U.S. 270 over Oflow 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. 270 over Oflow carry?

About 11,700 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is U.S. 270 over Oflow?

The structure is 41 ft (12.5 m) long with a longest span of 14 ft (4.3 m) and a deck 110 ft wide.

Who owns U.S. 270 over Oflow?

It is owned by the State Highway Agency.