US Bridges

I-94 Ramp over Clinton River Spillway

Fair

Macomb County, Michigan · 2.0 MI SE of Mt Clemens · Structure no. 000000000006140

Built
1984
41 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
276 ft
4 main spans
Daily traffic
34,850
2001 count
Owner
State
State Highway Agency

About this bridge

I-94 Ramp over Clinton River Spillway is a steel stringer/multi-beam or girder carrying I-94 Ramp over Clinton River Spillway in Macomb County, Michigan. It was built in 1984, so it is 41 years old, younger 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 34,850 vehicles a day, roughly 4% of them trucks, projected to reach 38,500 by 2021. The structure is 276 ft (84.1 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-94 Ramp
CrossesClinton River Spillway
Location2.0 MI SE of Mt Clemens
RouteInterstate 94
CountyMacomb County
StateMichigan
Coordinates42.56808, -82.85891
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating87.9 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length276 ft (84.1 m)
Longest span71 ft (21.6 m)
Deck width36 ft (11.1 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,850 (2001)
Projected traffic38,500 by 2021
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-94 Ramp over Clinton River Spillway built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-94 Ramp over Clinton River Spillway 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 June 2023.

How much traffic does I-94 Ramp over Clinton River Spillway carry?

About 34,850 vehicles per day (2001 count), of which roughly 4% are trucks.

How long is I-94 Ramp over Clinton River Spillway?

The structure is 276 ft (84.1 m) long with a longest span of 71 ft (21.6 m) and a deck 36 ft wide.

Who owns I-94 Ramp over Clinton River Spillway?

It is owned by the State Highway Agency.