US Bridges

U.S. 377 / S.H. 99 over Gray Horse Creek

Good

Lincoln County, Oklahoma · 0.9 Mi. S. JCT SH 66 · Structure no. 270820000000000

Built
2007
18 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
3,600
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 377 / S.H. 99 over Gray Horse Creek is a concrete culvert carrying U.S. 377 / S.H. 99 over Gray Horse Creek in Lincoln County, Oklahoma. It was built in 2007, so it is 18 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 3,600 vehicles a day, roughly 10% of them trucks, projected to reach 5,760 by 2042. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 39.1 mi (63 km).

CarriesU.S. 377 / S.H. 99
CrossesGray Horse Creek
Location0.9 Mi. S. JCT SH 66
RouteU.S. Route 377
Coordinates35.73458, -96.66279
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating87.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2022)
Projected traffic5,760 by 2042
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.1 mi (63 km)
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$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 377 / S.H. 99 over Gray Horse Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is U.S. 377 / S.H. 99 over Gray Horse Creek 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 Gray Horse Creek carry?

About 3,600 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is U.S. 377 / S.H. 99 over Gray Horse Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns U.S. 377 / S.H. 99 over Gray Horse Creek?

It is owned by the State Highway Agency.