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Ausable State Road over Tebo Drain

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

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

Ausable State Road over Tebo Drain in Bay County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1948, making it 77 years old at the 2025 inventory.
It carries about 75 vehicles a day (traffic count year 2000).
Its listed owner is the county highway agency.
It is one of 27 of the 166 inventoried bridges in Bay County rated poor (16.3%); 27 (16.3%) 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 29 ft
Location	300 Ft N of Coggins Rd
NBI structure number	000000000000723
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 over Squaconning Creek	1960	57,600	Fair
I-75 SB over Squaconning Creek	1960	57,600	Fair
I-75 NB over Goetz Drain	2010	53,002	Good
I-75 NB over Hesr	1960	44,350	Poor
US-10 EB over Gtw RR	1961	35,800	Fair
US-10 WB over Gtw RR	1961	35,800	Fair