US-421 over Island Creek
Clay County, Kentucky · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-421 over Island Creek in Clay County, Kentucky, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2016, making it 9 years old at the 2025 inventory.
- It carries about 8,172 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 35 of the 165 inventoried bridges in Clay County rated good (21.2%); 23 (13.9%) are rated poor.
- 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 → (37.18389, -83.77333)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 64 ft |
| Location | 1.5 MI N.of Jct KY 638 |
| NBI structure number | 026B00116N |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Clay County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-421 over Little Goose Creek | 1993 | 13,190 | Fair |
| Ky-80 over Hal Rogers Parkway | 1971 | 11,538 | Fair |
| US-421 over Goose Creek | 1983 | 8,691 | Fair |
| Hr-9006 over LITTLE GOOSE CRK & R | 1970 | 8,477 | Fair |
| Hr-9006 over Cheek Rd | 1970 | 8,477 | Fair |
| Hr-9006 over Urban Road | 1970 | 8,477 | Fair |
All bridges nearby: Clay County, KY bridge conditions · every bridge in Clay County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.