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M-85 NB over Marsh Creek

Wayne County, Michigan · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

M-85 NB over Marsh Creek in Wayne County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 15,575 vehicles a day (traffic count year 2014).
Its listed owner is the state highway agency.
It is one of 390 of the 1,035 inventoried bridges in Wayne County rated good (37.7%); 116 (11.2%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete single box beam
Length	about 42 ft
Location	0.5 Mi SW of Trenton
NBI structure number	000000000011785
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.

Bridge	Built	Vehicles/day	Condition
I-94 over Gtw NS CR RR & Russel	2000	180,032	Good
I-94 over I-75	1962	180,032	Fair
Rmp I-96E to I-75N over I-96 WB	1970	179,000	Fair
I-75 over Ramp to Davison(m-8)	1969	166,750	Fair
I-96 over Rouge River	1970	164,804	Good
I-75 over Conrail RR	1969	152,325	Good