US Bridges

U.S. 77 over Salt Fork River

Fair

Kay County, Oklahoma · 6.9 MI N Noble C/L · Structure no. 152070000000000

Built
1960
65 years old, rebuilt 2009
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
704 ft
4 main spans
Daily traffic
2,100
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 77 over Salt Fork River is a steel continuous stringer/multi-beam or girder carrying U.S. 77 over Salt Fork River in Kay County, Oklahoma. It was built in 1960 and reconstructed in 2009, so it is 65 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 2,100 vehicles a day, roughly 15% of them trucks, projected to reach 3,360 by 2042. The structure is 704 ft (214.6 m) long and 34 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesU.S. 77
CrossesSalt Fork River
Location6.9 MI N Noble C/L
RouteU.S. Route 77
Coordinates36.66999, -97.30974
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+5 approach)
Design loadH 20
Structure length704 ft (214.6 m)
Longest span100 ft (30.5 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2022)
Projected traffic3,360 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed28 mi (45 km)
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$4.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 77 over Salt Fork River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2009.

What condition is U.S. 77 over Salt Fork 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 July 2024.

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

About 2,100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is U.S. 77 over Salt Fork River?

The structure is 704 ft (214.6 m) long with a longest span of 100 ft (30.5 m) and a deck 34 ft wide.

Who owns U.S. 77 over Salt Fork River?

It is owned by the State Highway Agency.