Bridge conditions in Mercer County, Kentucky
76 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
6 of the 76 bridges the federal inventory lists in Mercer County are rated poor; the rest split 25 good and 45 fair.
- 6 of the 76 bridges in Mercer County, Kentucky, are rated in poor condition (7.9%) in the 2025 National Bridge Inventory, as of .
- 25 bridges (32.9%) are rated good and 45 (59.2%) fair.
- The median Mercer County bridge was built in 1991.
- The busiest poor-rated bridge is US-68 over Kentucky River (built 1954), carrying about 2,641 vehicles a day.
Good 32.9% · Fair 59.2% · Poor 7.9% of 76 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-68 over Kentucky River | 1954 | 2,641 | Poor |
| Paradise Camp Rd over Br of Cane Run | 1940 | 660 | Poor |
| Ky 1989 over Hayden Creek | 1982 | 225 | Poor |
| Ky-2329 over Town Creek | 1965 | 189 | Poor |
| Alford Rd over S.fk. Buchanah Creek | 1965 | 165 | Poor |
| Henry Robinson Rd over Brush Creek | 1983 | 26 | Poor |
Busiest bridges in the 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 |
| Ky 152 over Salt River | 1929 | 4,500 | Fair |
| Ky-152 over Horns Branch | 1930 | 4,500 | Good |
| US-68 over Kentucky River | 1954 | 2,641 | Poor |
| US-68 over Salt River | 1982 | 2,449 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Kentucky: Kentucky bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.