US Bridges

U.S. 377 / S.H. 99 over Deep Fork River

Fair

Lincoln County, Oklahoma · 14.2 MI N JCT US 62 · Structure no. 251320000000000

Built
1998
27 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
602 ft
5 main spans
Daily traffic
1,350
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 377 / S.H. 99 over Deep Fork River is a steel stringer/multi-beam or girder carrying U.S. 377 / S.H. 99 over Deep Fork River in Lincoln County, Oklahoma. It was built in 1998, so it is 27 years old, younger 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 6 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 1,350 vehicles a day, roughly 25% of them trucks, projected to reach 2,160 by 2042. The structure is 602 ft (183.5 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesU.S. 377 / S.H. 99
CrossesDeep Fork River
Location14.2 MI N JCT US 62
RouteU.S. Route 377
CountyLincoln County
StateOklahoma
Coordinates35.68493, -96.66296
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length602 ft (183.5 m)
Longest span133 ft (40.5 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2022)
Projected traffic2,160 by 2042
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 377 / S.H. 99 over Deep Fork River built?

It was built in 1998, making it 27 years old in 2025.

What condition is U.S. 377 / S.H. 99 over Deep 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 August 2024.

How much traffic does U.S. 377 / S.H. 99 over Deep Fork River carry?

About 1,350 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 377 / S.H. 99 over Deep Fork River?

The structure is 602 ft (183.5 m) long with a longest span of 133 ft (40.5 m) and a deck 42 ft wide.

Who owns U.S. 377 / S.H. 99 over Deep Fork River?

It is owned by the State Highway Agency.