Bridge conditions in Williamson County, Tennessee
531 inventoried bridges · 16 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Williamson County tracks close to typical: 16 of its 531 inventoried bridges (3.0%) are rated poor, against a national rate of about 7%.
- 16 of the 531 bridges in Williamson County, Tennessee, are rated in poor condition (3.0%) in the 2025 National Bridge Inventory, as of .
- 341 bridges (64.2%) are rated good and 174 (32.8%) fair.
- The median Williamson County bridge was built in 1989.
- The busiest poor-rated bridge is I65 over Branch (built 1963), carrying about 109,713 vehicles a day.
Good 64.2% · Fair 32.8% · Poor 3.0% of 531 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 |
|---|---|---|---|
| I65 over Branch | 1963 | 109,713 | Poor |
| I65 over I65 / SR106 & Harpeth Rv | 1963 | 94,031 | Poor |
| I65 over I65 / SR106 & Harpeth Rv | 1963 | 94,031 | Poor |
| Fap 96 over SR 96 / I65 | 1962 | 31,982 | Poor |
| Fap 96 over Harpeth River | 1958 | 19,656 | Poor |
| Fau 441 Ramp C over Ramp C/ramp B Cool Spng | 1991 | 17,725 | Poor |
| Fap 6 over Harpeth River | 1929 | 16,173 | Poor |
| Fap 6 350615G over CSX Railroad | 1930 | 14,336 | Poor |
| Fap 11 over Mill Creek | 1930 | 13,218 | Poor |
| Nfa 990 (sa 9425) over Harpeth River | 1962 | 11,007 | Poor |
| Fap 11 over Mc Canless Branch | 1930 | 8,087 | Poor |
| Fap 11 over Arrington Creek | 1932 | 8,087 | Poor |
| Fap 11 over Harpeth River | 1932 | 5,350 | Poor |
| Fas 106 over Rutherford Creek | 1966 | 5,337 | Poor |
| Fas 46 over Harpeth River | 1957 | 4,289 | Poor |
| Nfa A525 over Brush Creek | 1945 | 400 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I65 over I65 / Liberty Pike | 1997 | 138,787 | Good |
| I65 over Little Harpeth River | 1965 | 128,294 | Fair |
| I65 877478L over CSX Railroad | 1965 | 128,294 | Fair |
| I65 over CSX Railroad | 1965 | 128,294 | Fair |
| I65 over I65 / SR 252 | 1993 | 128,294 | Fair |
| I65 over Harpeth River | 2012 | 118,761 | Good |
| I65 over Branch | 1962 | 118,761 | Fair |
| I65 over Branch | 1963 | 109,713 | Good |
| I65 over Branch | 1963 | 109,713 | Poor |
| I65 over I65 / SR106 & Harpeth Rv | 1963 | 94,031 | Poor |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Tennessee: Tennessee 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.