US Bridges

S.H. 99 over Mill Creek

Good

Pontotoc County, Oklahoma · 7.6 MI S JCT SH 3 · Structure no. 036300000000000

Built
1932
93 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
2,200
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 99 over Mill Creek is a concrete culvert carrying S.H. 99 over Mill 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 2,200 vehicles a day, roughly 16% of them trucks, projected to reach 3,520 by 2042. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 44.7 mi (72 km).

CarriesS.H. 99
CrossesMill Creek
Location7.6 MI S JCT SH 3
RouteState Highway 99
Coordinates34.62738, -96.63478
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 within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating34.9 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 width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2022)
Projected traffic3,520 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 Mill Creek built?

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

What condition is S.H. 99 over Mill 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 Mill Creek carry?

About 2,200 vehicles per day (2022 count), of which roughly 16% are trucks.

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

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

Who owns S.H. 99 over Mill Creek?

It is owned by the State Highway Agency.