US Bridges

S.H. 99 over Ditch Drain

Good

Pontotoc County, Oklahoma · 3.2 MI N Johnston CO · Structure no. 036100000000000

Built
1932
93 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
1,300
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 99 over Ditch Drain is a concrete culvert carrying S.H. 99 over Ditch Drain 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 1,300 vehicles a day, roughly 16% of them trucks, projected to reach 2,080 by 2042. The structure is 34 ft (10.4 m) long and 22 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

CarriesS.H. 99
CrossesDitch Drain
Location3.2 MI N Johnston CO
RouteState Highway 99
Coordinates34.54934, -96.63461
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 protection8 Very GoodNo problems noted.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length34 ft (10.4 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 traffic1,300 (2022)
Projected traffic2,080 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 Ditch Drain built?

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

What condition is S.H. 99 over Ditch Drain 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 Ditch Drain carry?

About 1,300 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is S.H. 99 over Ditch Drain?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns S.H. 99 over Ditch Drain?

It is owned by the State Highway Agency.