US Bridges

I-75 NB over I-75 SB to EB Ramp

Fair

Wayne County, Michigan · I-75 & I-375 Intchg · Structure no. 000000000011805

Built
1970
55 years old, rebuilt 1998
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
11,374
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over I-75 SB to EB Ramp is a steel stringer/multi-beam or girder carrying I-75 NB over I-75 SB to EB Ramp in Wayne County, Michigan. It was built in 1970 and reconstructed in 1998, so it is 55 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 11,374 vehicles a day, projected to reach 14,803 by 2018. The structure is 34 ft (10.3 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesI-75 NB
CrossesI-75 SB to EB Ramp
LocationI-75 & I-375 Intchg
RouteInterstate 75
CountyWayne County
StateMichigan
Coordinates42.34251, -83.04615
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating80 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length34 ft (10.3 m)
Longest span34 ft (10.3 m)
Deck width46 ft (13.9 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,374 (2007)
Projected traffic14,803 by 2018
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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-75 NB over I-75 SB to EB Ramp built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1998.

What condition is I-75 NB over I-75 SB to EB 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 March 2024.

How much traffic does I-75 NB over I-75 SB to EB Ramp carry?

About 11,374 vehicles per day (2007 count).

How long is I-75 NB over I-75 SB to EB Ramp?

The structure is 34 ft (10.3 m) long with a longest span of 34 ft (10.3 m) and a deck 46 ft wide.

Who owns I-75 NB over I-75 SB to EB Ramp?

It is owned by the State Highway Agency.