US Bridges

U.S. 70 over Rock Creek

Good

Bryan County, Oklahoma · 11.01 E JCT SH-78 · Structure no. 065560000000000

Built
1938
87 years old, rebuilt 2017
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
143 ft
3 main spans
Daily traffic
4,200
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 70 over Rock Creek is a steel stringer/multi-beam or girder carrying U.S. 70 over Rock Creek in Bryan County, Oklahoma. It was built in 1938 and reconstructed in 2017, so it is 87 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 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 4,200 vehicles a day, roughly 25% of them trucks, projected to reach 6,720 by 2042. The structure is 143 ft (43.6 m) long and 40 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

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CarriesU.S. 70
CrossesRock Creek
Location11.01 E JCT SH-78
RouteU.S. Route 70
CountyBryan County
StateOklahoma
Coordinates34.00736, -96.18301
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 protection7 GoodSome minor problems.
Last inspectionApril 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 rating44 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length143 ft (43.6 m)
Longest span60 ft (18.3 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2022)
Projected traffic6,720 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 70 over Rock Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2017.

What condition is U.S. 70 over Rock 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 April 2024.

How much traffic does U.S. 70 over Rock Creek carry?

About 4,200 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 70 over Rock Creek?

The structure is 143 ft (43.6 m) long with a longest span of 60 ft (18.3 m) and a deck 40 ft wide.

Who owns U.S. 70 over Rock Creek?

It is owned by the State Highway Agency.