Ky-170 over Br of Mill Creek
Mason County, Kentucky · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ky-170 over Br of Mill Creek in Mason County, Kentucky, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1948, making it 77 years old at the 2025 inventory.
- It carries about 350 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 30 of the 97 inventoried bridges in Mason County rated good (30.9%); 8 (8.2%) 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 2023, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (38.49306, -83.78583)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 25 ft |
| Location | .10 Mi Sou. of Jct Ky 324 |
| NBI structure number | 081B00021N |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Mason County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ky-9 over Lawrence Creek | 1983 | 12,217 | Good |
| US-62X over Limestone Creek | 1954 | 10,454 | Fair |
| US-62X over Limestone Creek | 1963 | 9,230 | Fair |
| Ky-9 over Trans-ky Trans.rr | 1988 | 7,844 | Fair |
| Ky-11 over Limestone Creek | 1960 | 6,346 | Fair |
| Ky-11 over Mill Creek | 1991 | 6,346 | Fair |
All bridges nearby: Mason County, KY bridge conditions · every bridge in Mason County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.