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M-33 over Lake State RR & Old M-76

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

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

M-33 over Lake State RR & Old M-76 in Arenac 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 1968, making it 57 years old at the 2025 inventory.
It carries about 4,124 vehicles a day (traffic count year 2007).
Its listed owner is the state highway agency.
It is one of 12 of the 80 inventoried bridges in Arenac County rated poor (15.0%); 12 (15.0%) 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 313 ft
Location	1.0 Mi N of Alger
NBI structure number	000000000000379
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
I-75 Nb\|us-23 NB over Sunsmith Drain	1968	27,470	Fair
US-23\|MAIN St over Middle Br Pine River	1994	14,971	Fair
Sterling Road over I-75 NB	1968	14,350	Poor
I-75 Sb\|us-23 SB over S Br Pine River	1968	13,735	Fair
I-75 Nb\|us-23 NB over S Br Pine River	1968	13,735	Fair
US-23\|W Huron Rd over N Br Pine River	2001	9,170	Good