US Bridges

7 MI RD over I-75

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011847

Built
1967
58 years old, rebuilt 2003
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
220 ft
4 main spans
Daily traffic
16,738
2010 count
Owner
State
State Highway Agency

About this bridge

7 MI RD over I-75 is a steel stringer/multi-beam or girder carrying 7 MI RD over I-75 in Wayne County, Michigan. It was built in 1967 and reconstructed in 2003, so it is 58 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 16,738 vehicles a day, projected to reach 18,412 by 2025. The structure is 220 ft (67 m) long and 70 ft wide.

Location

Open in Google Maps
Carries7 MI RD
CrossesI-75
LocationIn Detroit
RouteCity Street 2000
CountyWayne County
StateMichigan
Coordinates42.43248, -83.09465
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length220 ft (67 m)
Longest span75 ft (22.8 m)
Deck width70 ft (21.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,738 (2010)
Projected traffic18,412 by 2025
Trucks—
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 7 MI RD over I-75 built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2003.

What condition is 7 MI RD over I-75 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 7 MI RD over I-75 carry?

About 16,738 vehicles per day (2010 count).

How long is 7 MI RD over I-75?

The structure is 220 ft (67 m) long with a longest span of 75 ft (22.8 m) and a deck 70 ft wide.

Who owns 7 MI RD over I-75?

It is owned by the State Highway Agency.