CR166 over West Branch Alum Creek

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

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

• CR166 over West Branch Alum Creek in Morrow 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 1963 and reconstructed in 1999, making it 62 years old at the 2025 inventory.
• It carries about 217 vehicles a day (traffic count year 2015).
• Its listed owner is the county highway agency.
• It is one of 26 of the 250 inventoried bridges in Morrow County rated poor (10.4%); 26 (10.4%) 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.

View this bridge on a map → (40.46015, -82.89547)

Component ratings

Bridge details

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

Busiest bridges in Morrow County

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

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