CR 166 (7) over Ditch #512
Williams County, Ohio · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 166 (7) over Ditch #512 in Williams County, Ohio, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 350 vehicles a day (traffic count year 2015).
- Its listed owner is the county highway agency.
- It is one of 115 of the 241 inventoried bridges in Williams County rated fair (47.7%); 8 (3.3%) 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 → (41.48156, -84.69142)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 30 ft |
| Location | 04760 Rd 7 |
| NBI structure number | 8636222 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Ohio department of transportation.
Busiest bridges in Williams County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| CR 2 Fish Creek Rd over Ir 80 Ohio Tpk | 1954 | 16,000 | Fair |
| Malcolm Church Rd over I80 Ohio Tpk | 1954 | 16,000 | Fair |
| Ricketts Bridge Rd over I80 Ohio Tpk | 1954 | 16,000 | Fair |
| W Eagle Church Rd over I80 Ohio Tpk | 1954 | 16,000 | Fair |
| Nettle CR Rd over I80 Ohio Tpk | 1954 | 16,000 | Fair |
| White Bridge Rd over I80 Ohio Tpk | 1954 | 16,000 | Fair |
All bridges nearby: Williams County, OH bridge conditions · every bridge in Williams County · Ohio bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.