Home › Ohio › Shelby County › SR-66 over Nine Mile Creek

SR-66 over Nine Mile Creek

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

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

SR-66 over Nine Mile Creek in Shelby County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1937 and reconstructed in 1979, making it 88 years old at the 2025 inventory.
It carries about 2,028 vehicles a day (traffic count year 2015).
Its listed owner is the state highway agency.
It is one of 202 of the 274 inventoried bridges in Shelby County rated good (73.7%); 5 (1.8%) 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


Structure	Prestressed concrete multiple box beam
Length	about 80 ft
Location	2.17MI.SE.OF Jct. SR-48
NBI structure number	7501110
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Ir-75 over Great Miami River	2005	46,838	Good
Ir-75 over Tr 39 Kirkwood Road	1960	23,419	Fair
Ir-75 over Tr 39 Kirkwood Road	1960	23,419	Good
Ir-75 over Tr 135 Vandemark Road	1960	23,419	Good
Ir-75 over Tr 135 Vandemark Road	1960	23,419	Good
SR-47 over Ir 75	1961	22,694	Good