US Bridges

U.S. 77 over Washita River

Good

Garvin County, Oklahoma · 2.7 N Murray C/L · Structure no. 301900000000000

Built
2019
6 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
672 ft
2 main spans
Daily traffic
5,300
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 77 over Washita River is a steel continuous stringer/multi-beam or girder carrying U.S. 77 over Washita River in Garvin County, Oklahoma. It was built in 2019, so it is 6 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 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 5,300 vehicles a day, roughly 13% of them trucks, projected to reach 7,505 by 2042. The structure is 672 ft (204.7 m) long and 70 ft wide.

CarriesU.S. 77
CrossesWashita River
Location2.7 N Murray C/L
RouteU.S. Route 77
Coordinates34.64642, -97.19446
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating37 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+3 approach)
Design loadHL 93
Structure length672 ft (204.7 m)
Longest span200 ft (61 m)
Deck width70 ft (21.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic5,300 (2022)
Projected traffic7,505 by 2042
Trucks13%
Lanes on structure4
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 2019, making it 6 years old in 2025.

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

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

About 5,300 vehicles per day (2022 count), of which roughly 13% are trucks.

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

The structure is 672 ft (204.7 m) long with a longest span of 200 ft (61 m) and a deck 70 ft wide.

Who owns U.S. 77 over Washita River?

It is owned by the State Highway Agency.