US Bridges

EB M-8 Rmp to I-75 over S Service Drive M-8

Poor

Wayne County, Michigan · In Detroit O S Service RD · Structure no. 000000000011377

Built
1971
54 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
210 ft
3 main spans
Daily traffic
4,360
1982 count
Owner
State
State Highway Agency

About this bridge

EB M-8 Rmp to I-75 over S Service Drive M-8 is a steel stringer/multi-beam or girder carrying EB M-8 Rmp to I-75 over S Service Drive M-8 in Wayne County, Michigan. It was built in 1971, so it is 54 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 4,360 vehicles a day, roughly 7% of them trucks, projected to reach 5,014 by 2002. The structure is 210 ft (64 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesEB M-8 Rmp to I-75
CrossesS Service Drive M-8
LocationIn Detroit O S Service RD
RouteState Highway 8
CountyWayne County
StateMichigan
Coordinates42.4071, -83.08392
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length210 ft (64 m)
Longest span104 ft (31.6 m)
Deck width48 ft (14.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,360 (1982)
Projected traffic5,014 by 2002
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was EB M-8 Rmp to I-75 over S Service Drive M-8 built?

It was built in 1971, making it 54 years old in 2025.

What condition is EB M-8 Rmp to I-75 over S Service Drive M-8 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does EB M-8 Rmp to I-75 over S Service Drive M-8 carry?

About 4,360 vehicles per day (1982 count), of which roughly 7% are trucks.

How long is EB M-8 Rmp to I-75 over S Service Drive M-8?

The structure is 210 ft (64 m) long with a longest span of 104 ft (31.6 m) and a deck 48 ft wide.

Who owns EB M-8 Rmp to I-75 over S Service Drive M-8?

It is owned by the State Highway Agency.