US Bridges

U.S. 77 over Walnut Creek

Fair

McClain County, Oklahoma · N.Side of Jct. SH39 · Structure no. 170350000000000

Built
1967
58 years old, rebuilt 2016
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
402 ft
4 main spans
Daily traffic
6,800
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 77 over Walnut Creek is a steel continuous stringer/multi-beam or girder carrying U.S. 77 over Walnut Creek in McClain County, Oklahoma. It was built in 1967 and reconstructed in 2016, so it is 58 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 5 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 6,800 vehicles a day, roughly 16% of them trucks, projected to reach 10,880 by 2042. The structure is 402 ft (122.5 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesU.S. 77
CrossesWalnut Creek
LocationN.Side of Jct. SH39
RouteU.S. Route 77
CountyMcClain County
StateOklahoma
Coordinates34.99889, -97.36694
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 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 width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2022)
Projected traffic10,880 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

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$2.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 77 over Walnut Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2016.

What condition is U.S. 77 over Walnut Creek 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 August 2023.

How much traffic does U.S. 77 over Walnut Creek carry?

About 6,800 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is U.S. 77 over Walnut Creek?

The structure is 402 ft (122.5 m) long with a longest span of 100 ft (30.5 m) and a deck 35 ft wide.

Who owns U.S. 77 over Walnut Creek?

It is owned by the State Highway Agency.