US Bridges

I-75NB&I-94WB Ramp over I-75 & Ramp

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011826

Built
1964
61 years old, rebuilt 2002
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
772 ft
9 main spans
Daily traffic
10,110
1982 count
Owner
State
State Highway Agency

About this bridge

I-75NB&I-94WB Ramp over I-75 & Ramp is a steel stringer/multi-beam or girder carrying I-75NB&I-94WB Ramp over I-75 & Ramp in Wayne County, Michigan. It was built in 1964 and reconstructed in 2002, 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 10,110 vehicles a day, roughly 10% of them trucks, projected to reach 11,000 by 2010. The structure is 772 ft (235.3 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesI-75NB&I-94WB Ramp
CrossesI-75 & Ramp
LocationIn Detroit
RouteInterstate 75
CountyWayne County
StateMichigan
Coordinates42.36779, -83.05736
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length772 ft (235.3 m)
Longest span108 ft (32.9 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,110 (1982)
Projected traffic11,000 by 2010
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75NB&I-94WB Ramp over I-75 & Ramp built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2002.

What condition is I-75NB&I-94WB Ramp over I-75 & Ramp 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 January 2025.

How much traffic does I-75NB&I-94WB Ramp over I-75 & Ramp carry?

About 10,110 vehicles per day (1982 count), of which roughly 10% are trucks.

How long is I-75NB&I-94WB Ramp over I-75 & Ramp?

The structure is 772 ft (235.3 m) long with a longest span of 108 ft (32.9 m) and a deck 29 ft wide.

Who owns I-75NB&I-94WB Ramp over I-75 & Ramp?

It is owned by the State Highway Agency.