US Bridges

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

Good

Lincoln County, Oklahoma · 14.3 MI N JCT US 62 · Structure no. 251330000000000

Built
1998
27 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
502 ft
9 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 Oflow is a prestressed concrete stringer/multi-beam or girder carrying U.S. 377 / S.H. 99 over Deep Fork Oflow 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 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 1,350 vehicles a day, roughly 25% of them trucks, projected to reach 2,160 by 2042. The structure is 502 ft (152.9 m) long and 42 ft wide.

CarriesU.S. 377 / S.H. 99
CrossesDeep Fork Oflow
Location14.3 MI N JCT US 62
RouteU.S. Route 377
Coordinates35.68969, -96.66289
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
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 evaluation7: Better than 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 rating70 US tons
Inventory rating42 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length502 ft (152.9 m)
Longest span56 ft (17.1 m)
Deck width42 ft (12.8 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
CrossesWaterway
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 Oflow 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 Oflow 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 August 2024.

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

The structure is 502 ft (152.9 m) long with a longest span of 56 ft (17.1 m) and a deck 42 ft wide.

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

It is owned by the State Highway Agency.