US Bridges

U.S. 77 over Washita River

Fair

Murray County, Oklahoma · 6.5 MI N Carter C/L · Structure no. 179590000000000

Built
1970
55 years old, rebuilt 1986
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
854 ft
7 main spans
Daily traffic
2,300
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 77 over Washita River is a prestressed concrete stringer/multi-beam or girder carrying U.S. 77 over Washita River in Murray County, Oklahoma. It was built in 1970 and reconstructed in 1986, so it is 55 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 2,300 vehicles a day, roughly 15% of them trucks, projected to reach 3,680 by 2042. The structure is 854 ft (260.3 m) long and 42 ft wide.

CarriesU.S. 77
CrossesWashita River
Location6.5 MI N Carter C/L
RouteU.S. Route 77
Coordinates34.45537, -97.13334
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7 (+2 approach)
Design loadHS 20
Structure length854 ft (260.3 m)
Longest span100 ft (30.5 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2022)
Projected traffic3,680 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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$5.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 77 over Washita River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1986.

What condition is U.S. 77 over Washita 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 2024.

How much traffic does U.S. 77 over Washita River carry?

About 2,300 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is U.S. 77 over Washita River?

The structure is 854 ft (260.3 m) long with a longest span of 100 ft (30.5 m) and a deck 42 ft wide.

Who owns U.S. 77 over Washita River?

It is owned by the State Highway Agency.