US Bridges

M-39 SB Ramp L over I-94

Fair

Wayne County, Michigan · In Allen Park · Structure no. 000000000011147

Built
1985
40 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,331 ft
13 main spans
Daily traffic
4,150
1982 count
Owner
State
State Highway Agency

About this bridge

M-39 SB Ramp L over I-94 is a prestressed concrete stringer/multi-beam or girder carrying M-39 SB Ramp L over I-94 in Wayne County, Michigan. It was built in 1985, so it is 40 years old, younger 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 4,150 vehicles a day, roughly 3% of them trucks, projected to reach 4,773 by 2002. The structure is 1,331 ft (405.6 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-39 SB Ramp L
CrossesI-94
LocationIn Allen Park
RouteInterstate 94
CountyWayne County
StateMichigan
Coordinates42.2697, -83.2246
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans13 (+3 approach)
Design loadHS 25 or greater
Structure length1,331 ft (405.6 m)
Longest span123 ft (37.5 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,150 (1982)
Projected traffic4,773 by 2002
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 M-39 SB Ramp L over I-94 built?

It was built in 1985, making it 40 years old in 2025.

What condition is M-39 SB Ramp L over I-94 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 August 2024.

How much traffic does M-39 SB Ramp L over I-94 carry?

About 4,150 vehicles per day (1982 count), of which roughly 3% are trucks.

How long is M-39 SB Ramp L over I-94?

The structure is 1,331 ft (405.6 m) long with a longest span of 123 ft (37.5 m) and a deck 48 ft wide.

Who owns M-39 SB Ramp L over I-94?

It is owned by the State Highway Agency.