US Bridges

S.H. 99 over Sheep Creek

Good

Pontotoc County, Oklahoma · 11.1 MI S JCT SH3 · Structure no. 036170000000000

Built
1932
93 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
1,800
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 99 over Sheep Creek is a concrete culvert carrying S.H. 99 over Sheep Creek in Pontotoc County, Oklahoma. It was built in 1932, so it is 93 years old, older 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 1,800 vehicles a day, roughly 16% of them trucks, projected to reach 2,880 by 2042. The structure is 33 ft (10.1 m) long and 22 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

CarriesS.H. 99
CrossesSheep Creek
Location11.1 MI S JCT SH3
RouteState Highway 99
Coordinates34.57905, -96.6333
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.2 US tons
Inventory rating34.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2022)
Projected traffic2,880 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 99 over Sheep Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is S.H. 99 over Sheep 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 June 2024.

How much traffic does S.H. 99 over Sheep Creek carry?

About 1,800 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is S.H. 99 over Sheep Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns S.H. 99 over Sheep Creek?

It is owned by the State Highway Agency.