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Diamond Mill C217 over Bear Creek

Montgomery County, Ohio · rated Poor in the 2025 National Bridge Inventory

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

Diamond Mill C217 over Bear Creek in Montgomery County, Ohio, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1957, making it 68 years old at the 2025 inventory.
It carries about 2,651 vehicles a day (traffic count year 2017).
Its listed owner is the county highway agency.
It is one of 18 of the 633 inventoried bridges in Montgomery County rated poor (2.8%); 18 (2.8%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 63 ft
Location	.5 Mile South of SR35
NBI structure number	5740088
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Ir-75 over Cincinnati Street	1966	130,047	Good
Ir-75 over Stewart Street	2011	130,047	Good
Ir-75 over Carillon Blvd Gt Miami R	1965	128,842	Good
Nb/sb Ir-75 over Third St.; CR194A	2014	123,721	Good
Ir-75 over Salem Ave Second First	2014	123,721	Good
Ramp EB35 to NB75 over Rmp=us35e-i75n Un Rmps	1969	122,680	Good