Ky-40 over Rockcastle Creek
Martin County, Kentucky · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ky-40 over Rockcastle Creek in Martin County, Kentucky, 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 1953, making it 72 years old at the 2025 inventory.
- It carries about 4,804 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 10 of the 70 inventoried bridges in Martin County rated poor (14.3%); 10 (14.3%) 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 → (37.86806, -82.54194)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 171 ft |
| Location | .05 Mi W of Jct Ky 3 N |
| NBI structure number | 080B00005N |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Martin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ky-645 over Middle Fork | 2004 | 4,537 | Good |
| Ky-645 over Becca Liz Ln | 2005 | 4,537 | Good |
| Ky-645 over KY-40 & Coldwater Fork | 2010 | 4,537 | Good |
| Ky-645 Ramp Ky-40 over Coldwater Fork | 2006 | 4,537 | Good |
| Ky 40 over Buck Creek | 1929 | 4,308 | Good |
| Ky-908 over Blacklog Fork | 1987 | 3,852 | Fair |
All bridges nearby: Martin County, KY bridge conditions · every bridge in Martin County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.