US Bridges

I-75 SB over Outer Drive

Fair

Wayne County, Michigan · In Melvindale · Structure no. 000000000011731

Built
1966
59 years old, rebuilt 2002
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
2 main spans
Daily traffic
51,189
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over Outer Drive is a steel continuous stringer/multi-beam or girder carrying I-75 SB over Outer Drive in Wayne County, Michigan. It was built in 1966 and reconstructed in 2002, so it is 59 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 51,189 vehicles a day, roughly 12% of them trucks, projected to reach 49,610 by 2018. The structure is 290 ft (88.4 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 SB
CrossesOuter Drive
LocationIn Melvindale
RouteInterstate 75
CountyWayne County
StateMichigan
Coordinates42.26504, -83.1713
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 25 or greater
Structure length290 ft (88.4 m)
Longest span99 ft (30.1 m)
Deck width60 ft (18.4 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,189 (2007)
Projected traffic49,610 by 2018
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 SB over Outer Drive built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2002.

What condition is I-75 SB over Outer Drive 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-75 SB over Outer Drive carry?

About 51,189 vehicles per day (2007 count), of which roughly 12% are trucks.

How long is I-75 SB over Outer Drive?

The structure is 290 ft (88.4 m) long with a longest span of 99 ft (30.1 m) and a deck 60 ft wide.

Who owns I-75 SB over Outer Drive?

It is owned by the State Highway Agency.