SR 4 over Great Miami River

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

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

• SR 4 over Great Miami River in Butler County, Ohio, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
• It was built in 1956, making it 69 years old at the 2025 inventory.
• It carries about 10,340 vehicles a day (traffic count year 2015).
• Its listed owner is the state highway agency.
• It is one of 125 of the 377 inventoried bridges in Butler County rated fair (33.2%); 15 (4.0%) 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.

View this bridge on a map → (39.53888, -84.38411)

Component ratings

Bridge details

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

Busiest bridges in Butler County

All bridges nearby: Butler County, OH bridge conditions · every bridge in Butler County · Ohio bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.