US Bridges

I-75 SB over Clintonville RD

Fair

Oakland County, Michigan · 4.1 MI SE of M-15 · Structure no. 000000000008017

Built
1962
63 years old, rebuilt 1988
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
162 ft
3 main spans
Daily traffic
42,870
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over Clintonville RD is a steel stringer/multi-beam or girder carrying I-75 SB over Clintonville RD in Oakland County, Michigan. It was built in 1962 and reconstructed in 1988, so it is 63 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 42,870 vehicles a day, roughly 7% of them trucks, projected to reach 55,750 by 2029. The structure is 162 ft (49.4 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 SB
CrossesClintonville RD
Location4.1 MI SE of M-15
RouteInterstate 75
CountyOakland County
StateMichigan
Coordinates42.72078, -83.3493
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span58 ft (17.8 m)
Deck width62 ft (18.9 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,870 (2007)
Projected traffic55,750 by 2029
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 SB over Clintonville RD built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1988.

What condition is I-75 SB over Clintonville RD in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does I-75 SB over Clintonville RD carry?

About 42,870 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is I-75 SB over Clintonville RD?

The structure is 162 ft (49.4 m) long with a longest span of 58 ft (17.8 m) and a deck 62 ft wide.

Who owns I-75 SB over Clintonville RD?

It is owned by the State Highway Agency.