US Bridges

M-102 EB over M-39

Good

Wayne County, Michigan · N Lts of Detroit · Structure no. 000000000011714

Built
1964
61 years old, rebuilt 2010
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
109 ft
2 main spans
Daily traffic
45,705
2007 count
Owner
State
State Highway Agency

About this bridge

M-102 EB over M-39 is a steel continuous stringer/multi-beam or girder carrying M-102 EB over M-39 in Wayne County, Michigan. It was built in 1964 and reconstructed in 2010, so it is 61 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45,705 vehicles a day, roughly 2% of them trucks, projected to reach 58,400 by 2029. The structure is 109 ft (33.3 m) long and 65 ft wide.

Location

Open in Google Maps
CarriesM-102 EB
CrossesM-39
LocationN Lts of Detroit
RouteState Highway 102
CountyWayne County
StateMichigan
Coordinates42.44418, -83.21962
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length109 ft (33.3 m)
Longest span53 ft (16.3 m)
Deck width65 ft (19.8 m)
Roadway width56 ft (17.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,705 (2007)
Projected traffic58,400 by 2029
Trucks2%
Lanes on structure4
Traffic directionOne-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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-102 EB over M-39 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2010.

What condition is M-102 EB over M-39 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does M-102 EB over M-39 carry?

About 45,705 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is M-102 EB over M-39?

The structure is 109 ft (33.3 m) long with a longest span of 53 ft (16.3 m) and a deck 65 ft wide.

Who owns M-102 EB over M-39?

It is owned by the State Highway Agency.