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Mackinaw Trail Hwy over US-131 Nb|m-55 EB

Wexford County, Michigan · rated Fair in the 2025 National Bridge Inventory

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

Mackinaw Trail Hwy over US-131 Nb|m-55 EB in Wexford County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1966, making it 59 years old at the 2025 inventory.
It carries about 12,310 vehicles a day (traffic count year 2007).
Its listed owner is the state highway agency.
It is one of 43 of the 64 inventoried bridges in Wexford County rated fair (67.2%); 5 (7.8%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 377 ft
Location	1.8 Mi S of Cadillac
NBI structure number	000000000012543
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
E 36 Rd over US-131 NB	1997	77,777	Fair
US-131 Bl\|mitchell over Clam River	1935	23,406	Fair
M-115 over Cadillac Canal	1957	12,589	Fair
Chestnut over Clam River	1968	12,000	Poor
M-55\|e 38 Rd over US-131 NB	1997	10,400	Fair
US-131 over Manistee River	2009	8,450	Fair