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T.r. 173 over Mad River

Logan County, Ohio · rated Good in the 2025 National Bridge Inventory

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

T.r. 173 over Mad River in Logan County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
It was built in 2007, making it 18 years old at the 2025 inventory.
It carries about 112 vehicles a day (traffic count year 2015).
Its listed owner is the county highway agency.
It is one of 219 of the 283 inventoried bridges in Logan County rated good (77.4%); 3 (1.1%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings

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

Bridge	Built	Vehicles/day	Condition
Usr 33 over Otter Creek	1996	20,551	Good
Usr 33 over Van Hyning Ditch #750	1996	20,234	Fair
Usr 33 over Abandoned RR	1960	11,483	Fair
SR-47 over Penn Central RR	1970	10,497	Fair
Usr 33 over CR 5 & Fish Pond Channel	1963	10,117	Good
Usr 33 over Cr-5 & Fish Pond Channel	1993	10,117	Good