US Bridges

M-85 NB over Marsh Creek

Good

Wayne County, Michigan · 0.5 MI SW of Trenton · Structure no. 000000000011785

Built
2016
9 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
15,575
2014 count
Owner
State
State Highway Agency

About this bridge

M-85 NB over Marsh Creek is a prestressed concrete box beam or girders - single or spread carrying M-85 NB over Marsh Creek in Wayne County, Michigan. It was built in 2016, so it is 9 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,575 vehicles a day, roughly 7% of them trucks, projected to reach 17,325 by 2036. The structure is 43 ft (13.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-85 NB
CrossesMarsh Creek
Location0.5 MI SW of Trenton
RouteState Highway 85
CountyWayne County
StateMichigan
Coordinates42.10636, -83.21898
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length43 ft (13.1 m)
Longest span39 ft (11.9 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,575 (2014)
Projected traffic17,325 by 2036
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-85 NB over Marsh Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is M-85 NB over Marsh Creek 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 May 2024.

How much traffic does M-85 NB over Marsh Creek carry?

About 15,575 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is M-85 NB over Marsh Creek?

The structure is 43 ft (13.1 m) long with a longest span of 39 ft (11.9 m) and a deck 45 ft wide.

Who owns M-85 NB over Marsh Creek?

It is owned by the State Highway Agency.