Home › Michigan › Iosco County › Turtle Rd over Au Gres River

Turtle Rd over Au Gres River

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

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

Turtle Rd over Au Gres River in Iosco County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2003, making it 22 years old at the 2025 inventory.
It carries about 780 vehicles a day (traffic count year 2006).
Its listed owner is the county highway agency.
It is one of 32 of the 47 inventoried bridges in Iosco County rated fair (68.1%); 3 (6.4%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 104 ft
Location	2.125 Mi E of M-65
NBI structure number	000000000004131
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US-23 over Tawas River	1984	15,836	Fair
F 41 over Van Ettan Creek	1979	12,300	Fair
US-23 over Au Sable River	1972	8,367	Fair
M-55\|hemlock St over Tawas River	1950	8,047	Fair
M-65 over Hale Creek	1952	6,737	Fair
US-23 over Private Road	1931	5,497	Fair