Ky-342 over Southern Railroad
Mercer County, Kentucky · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ky-342 over Southern Railroad in Mercer County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 355 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 45 of the 76 inventoried bridges in Mercer County rated fair (59.2%); 6 (7.9%) 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 → (37.78333, -84.72556)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 246 ft |
| Location | 2.6 Mi N of S.jct W/ky 33 |
| NBI structure number | 084B00046N |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Mercer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Danville Road over Dry Creek | 1952 | 10,414 | Fair |
| Harrodsburg Bypass over Pioneer Creek | 1996 | 9,565 | Fair |
| Martha Layne Colli over Salt River | 1965 | 7,450 | Fair |
| Bg-9002 over Salt River | 1965 | 7,450 | Fair |
| 127 Bypass South R over Southern RR | 1996 | 4,783 | Good |
| Harrodsburg Bypass over Southern Railroad | 1996 | 4,783 | Good |
All bridges nearby: Mercer County, KY bridge conditions · every bridge in Mercer County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.