US Bridges

I-75 NB over Clinton River

Fair

Oakland County, Michigan · 0.6 MI S of M-59 · Structure no. 000000000008043

Built
1964
61 years old, rebuilt 2001
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
65,550
2019 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over Clinton River is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over Clinton River in Oakland County, Michigan. It was built in 1964 and reconstructed in 2001, so it is 61 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 5 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 65,550 vehicles a day, roughly 6% of them trucks, projected to reach 69,550 by 2039. The structure is 44 ft (13.4 m) long and 91 ft wide.

Location

Open in Google Maps
CarriesI-75 NB
CrossesClinton River
Location0.6 MI S of M-59
RouteInterstate 75
CountyOakland County
StateMichigan
Coordinates42.6321, -83.23855
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length44 ft (13.4 m)
Longest span42 ft (12.8 m)
Deck width91 ft (27.8 m)
Roadway width83 ft (25.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,550 (2019)
Projected traffic69,550 by 2039
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 NB over Clinton River built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2001.

What condition is I-75 NB over Clinton River 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 July 2023.

How much traffic does I-75 NB over Clinton River carry?

About 65,550 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is I-75 NB over Clinton River?

The structure is 44 ft (13.4 m) long with a longest span of 42 ft (12.8 m) and a deck 91 ft wide.

Who owns I-75 NB over Clinton River?

It is owned by the State Highway Agency.