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
- CR166 over West Branch Alum Creek in Morrow County, Ohio, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- 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.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2024, on a 12-month routine inspection cycle.
- 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
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 25 ft |
| Location | .6 Mi.n.int. CR155 |
| NBI structure number | 5931460 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Morrow County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-71 SB over Tr-216 (crall Rd.) | 1959 | 25,453 | Good |
| I-71 NB over Tr-216 (crall Rd.) | 1959 | 25,453 | Good |
| I-71 SB over Big Walnut Creek | 1960 | 25,453 | Good |
| Ir 71 over Big Walnut Creek | 1960 | 25,453 | Good |
| I-71 over over Tr-232 (kaufman Rd. | 1960 | 25,453 | Good |
| I-71 over over Tr-232 (kaufman Rd. | 1960 | 25,453 | Good |
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.