Cannon County Bridge Report Card
Cannon County scores 67 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Cannon County, Tennessee
Cannon County has 159 bridges in the National Bridge Inventory, with 16 rated poor and 2 rated scour-critical. Its poor-condition share of 10.1% is above the 4.4% statewide average. Poor-condition bridges carry about 25,746 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Cannon County a Bridge Condition Exposure Score of 67/100 (D). The county has 159 bridges in the National Bridge Inventory, including 16 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 25,746 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 | 10.1% | 20.1 |
| Poor-condition traffic exposure | 25 | 12.5% of measured traffic | 9.3 |
| Scour-critical bridge share | 20 | 1.3% | 2.5 |
| Average age vs national baseline | 10 | 50 years vs 48 nationally | 1.0 |
| Traffic-data completeness | 5 | 206,530 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 | 10.1% |
| State Poor-Condition Share | 4.4% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.3% |
| Average Bridge Age | 50 years |
| Poor-Condition Traffic Exposure | 25,746 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Cannon County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Fap 1 over East Fork Stones River | Poor condition + traffic exposure | Poor | 14,614 | 1924 |
| Nfa 1376 over East Fork Stones River | Poor condition + traffic exposure | Poor | 2,237 | 1924 |
| Nfa 1376 over East Fork Stones River | Poor condition + traffic exposure | Poor | 2,237 | 1924 |
| Nfa 1376 over Rush Creek | Poor condition + traffic exposure | Poor | 2,237 | 1924 |
| Nfa 1376 over East Fork Stones River | Poor condition + traffic exposure | Poor | 1,631 | 1920 |
| Nfa 1376 over Locke Creek | Poor condition + traffic exposure | Poor | 1,631 | 1920 |
| Nfa A006 over Crane Branch | Poor condition + traffic exposure | Poor | 409 | 1924 |
| Nfa A021 over Marshall Creek | Poor condition + traffic exposure | Poor | 270 | 1950 |
| Nfa A463 over Hill Creek | Poor condition + traffic exposure | Poor | 170 | 1950 |
| Nfa A155 over Duke Creek | Poor condition + traffic exposure | Poor | 80 | 1950 |
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.