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County Road 166 over Muskellunge Creek

Sandusky County, Ohio · rated Fair in the 2025 National Bridge Inventory

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

County Road 166 over Muskellunge Creek in Sandusky County, Ohio, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1990, making it 35 years old at the 2025 inventory.
It carries about 327 vehicles a day (traffic count year 2015).
Its listed owner is the county highway agency.
It is one of 91 of the 303 inventoried bridges in Sandusky County rated fair (30.0%); 8 (2.6%) 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 multiple box beam
Length	about 82 ft
Location	0.37 Mi N. of Jct Tr 73
NBI structure number	7242336
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Four Mile House Rd over I80 Ohio Tpk	1954	300,000	Fair
I80 Oh Tpk over Trapp Rd	1954	43,463	Fair
I80 Oh Tpk over Toussaint Creek	1954	43,463	Fair
I80 Oh Tpk over Lime Rd	1954	43,463	Fair
I80 Oh Tpk over Wolf Creek	1954	43,463	Fair
I80 Oh Tpk over Inland Trail (abd RR)	1954	43,463	Fair