US Bridges

S.H. 9 over Imhoff Creek

Good

Cleveland County, Oklahoma · 1.7 Mi. E. JCT I-35 · Structure no. 180170000000000

Built
1971
54 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
66 ft
3 main spans
Daily traffic
30,100
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 9 over Imhoff Creek is a concrete culvert carrying S.H. 9 over Imhoff Creek in Cleveland County, Oklahoma. It was built in 1971, so it is 54 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 30,100 vehicles a day, roughly 7% of them trucks, projected to reach 48,160 by 2042. The structure is 66 ft (20.1 m) long and 150 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesS.H. 9
CrossesImhoff Creek
Location1.7 Mi. E. JCT I-35
RouteState Highway 9
CountyCleveland County
StateOklahoma
Coordinates35.18422, -97.45939
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span17 ft (5.2 m)
Deck width150 ft (45.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,100 (2022)
Projected traffic48,160 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 9 over Imhoff Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is S.H. 9 over Imhoff 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 November 2023.

How much traffic does S.H. 9 over Imhoff Creek carry?

About 30,100 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is S.H. 9 over Imhoff Creek?

The structure is 66 ft (20.1 m) long with a longest span of 17 ft (5.2 m) and a deck 150 ft wide.

Who owns S.H. 9 over Imhoff Creek?

It is owned by the State Highway Agency.