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M-18 over Tobacco River

Gladwin County, Michigan · rated Poor in the 2025 National Bridge Inventory

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

M-18 over Tobacco River in Gladwin County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1939, making it 86 years old at the 2025 inventory.
It carries about 6,100 vehicles a day (traffic count year 2011).
Its listed owner is the state highway agency.
It is one of 4 of the 63 inventoried bridges in Gladwin County rated poor (6.3%); 4 (6.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 284 ft
Location	In Beaverton
NBI structure number	000000000002871
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
M-18\|m-61\|w Cedar over Cedar Creek	2001	13,231	Fair
M-18 over S Br Little Sugar River	1923	5,963	Good
M-18 over Farm Drain	1937	5,052	Fair
M-30 over Tobacco River	2021	4,100	Good
M-30 over Larabee Creek	1977	3,517	Good
M-61 over Tittabawassee River	1958	3,302	Fair