US Bridges

I-75 S-E Ramp over I-75 SB

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011832

Built
1962
63 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
193 ft
2 main spans
Daily traffic
10,110
1982 count
Owner
State
State Highway Agency

About this bridge

I-75 S-E Ramp over I-75 SB is a steel stringer/multi-beam or girder carrying I-75 S-E Ramp over I-75 SB in Wayne County, Michigan. It was built in 1962, 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 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 3% of them trucks, projected to reach 10,110 by 1977. The structure is 193 ft (58.8 m) long and 29 ft wide.

CarriesI-75 S-E Ramp
CrossesI-75 SB
LocationIn Detroit
RouteInterstate 75
Coordinates42.36904, -83.05845
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103.9 US tons
Inventory rating62.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length193 ft (58.8 m)
Longest span105 ft (32 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,110 (1982)
Projected traffic10,110 by 1977
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed—
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 proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 S-E Ramp over I-75 SB built?

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

What condition is I-75 S-E Ramp over I-75 SB 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 April 2024.

How much traffic does I-75 S-E Ramp over I-75 SB carry?

About 10,110 vehicles per day (1982 count), of which roughly 3% are trucks.

How long is I-75 S-E Ramp over I-75 SB?

The structure is 193 ft (58.8 m) long with a longest span of 105 ft (32 m) and a deck 29 ft wide.

Who owns I-75 S-E Ramp over I-75 SB?

It is owned by the State Highway Agency.