US 421 over CSX Railroad
Henry County, Kentucky · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 421 over CSX Railroad in Henry County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2009, making it 16 years old at the 2025 inventory.
- It carries about 3,586 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 63 of the 94 inventoried bridges in Henry County rated fair (67.0%); 11 (11.7%) 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 July 2023, on a 48-month routine inspection cycle.
- 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 → (38.5275, -85.19083)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete single box beam |
| Length | about 60 ft |
| Location | 150 Ft N of Ky 574 |
| NBI structure number | 052B00081N |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Henry County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-71 over Jones Rd | 1968 | 29,817 | Fair |
| I-71 NB over Ky 1606 & Fallen Tmb Crk | 1968 | 19,833 | Fair |
| I-71 SB over Ky 1606 & Fallen Tmb Crk | 1968 | 19,833 | Fair |
| I-71 SB over CSX RR White Sulphur Fk | 1968 | 19,833 | Fair |
| I-71 NB over CSX RR White Sulphur Fk | 1968 | 19,833 | Fair |
| I-71 SB over Little Kentucky River | 1968 | 19,833 | Fair |
All bridges nearby: Henry County, KY bridge conditions · every bridge in Henry County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.