Knox County Bridge Report Card
Knox County scores 98 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Knox County, Tennessee
Knox County has 584 bridges in the National Bridge Inventory, with 3 rated poor and 0 rated scour-critical. Its poor-condition share of 0.5% is at or below the 4.4% statewide average. Poor-condition bridges carry about 11,506 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Knox County a Bridge Condition Exposure Score of 98/100 (A). The county has 584 bridges in the National Bridge Inventory, including 3 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 11,506 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 0.5% | 1.0 |
| Poor-condition traffic exposure | 25 | 0.1% of measured traffic | 0.0 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 51 years vs 48 nationally | 1.3 |
| Traffic-data completeness | 5 | 18,143,385 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 0.5% |
| State Poor-Condition Share | 4.4% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 51 years |
| Poor-Condition Traffic Exposure | 11,506 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Knox County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Fau 3775 over Tennessee River & 2 Rts. | Poor condition + traffic exposure | Poor | 6,215 | 1897 |
| Nfa 5620 over Ten Mile Creek | Poor condition + traffic exposure | Poor | 4,240 | 1970 |
| Nfa A021 over Whites Creek | Poor condition + traffic exposure | Poor | 1,051 | 1950 |
| I40 over I40 / Hollywood Dr. | High traffic | Good | 182,502 | 1965 |
| I40 over Third Creek | High traffic | Fair | 182,502 | 1965 |
| I40 over I40/i40-eb Rmp To I75 N | High traffic | Good | 182,502 | 1981 |
| I40 Rmp C-c over I40-wb Rmp-i75n / Pmill | High traffic | Good | 182,502 | 1982 |
| WB Frontage Rd. over I40-wb-rmp / Papermill | High traffic | Good | 182,502 | 2005 |
| I40 over I40 / Papermill Rd. | High traffic | Good | 182,502 | 2006 |
| I40 over I40 / Old West Hills I/c | High traffic | Good | 179,856 | 1959 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.