US Bridges

U.S. 270 over Relay Creek

Good

Blaine County, Oklahoma · 5.2 S S.H. 33 Watonga · Structure no. 299400000000000

Built
2013
12 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
133 ft
1 main span
Daily traffic
2,400
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 270 over Relay Creek is a prestressed concrete stringer/multi-beam or girder carrying U.S. 270 over Relay Creek in Blaine County, Oklahoma. It was built in 2013, so it is 12 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 2,400 vehicles a day, roughly 25% of them trucks, projected to reach 3,840 by 2042. The structure is 133 ft (40.5 m) long and 40 ft wide.

Location

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CarriesU.S. 270
CrossesRelay Creek
Location5.2 S S.H. 33 Watonga
RouteU.S. Route 270
CountyBlaine County
StateOklahoma
Coordinates35.77222, -98.40611
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment9: Superior to present desirable criteria
Operating rating78 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length133 ft (40.5 m)
Longest span133 ft (40.5 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic3,840 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 270 over Relay Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is U.S. 270 over Relay 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 February 2024.

How much traffic does U.S. 270 over Relay Creek carry?

About 2,400 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 270 over Relay Creek?

The structure is 133 ft (40.5 m) long with a longest span of 133 ft (40.5 m) and a deck 40 ft wide.

Who owns U.S. 270 over Relay Creek?

It is owned by the State Highway Agency.