Trimble County Bridge Report Card
Trimble County scores 69 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Trimble County, Kentucky
Trimble County has 46 bridges in the National Bridge Inventory, with 4 rated poor and 1 rated scour-critical. Its poor-condition share of 8.7% is above the 7.5% statewide average. Poor-condition bridges carry about 4,592 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Trimble County a Bridge Condition Exposure Score of 69/100 (D). The county has 46 bridges in the National Bridge Inventory, including 4 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 4,592 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 | 8.7% | 17.4 |
| Poor-condition traffic exposure | 25 | 12.8% of measured traffic | 9.6 |
| Scour-critical bridge share | 20 | 2.2% | 4.3 |
| Average age vs national baseline | 10 | 40 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 35,966 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 | 8.7% |
| State Poor-Condition Share | 7.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.2% |
| Average Bridge Age | 40 years |
| Poor-Condition Traffic Exposure | 4,592 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Trimble County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Ky 1838 over Corn Creek | Poor condition + traffic exposure | Poor | 256 | 1968 |
| Ky 36 over Canip Creek | Poor condition + traffic exposure | Poor | 3,978 | 1933 |
| Ky 625 over Trib To Corn Creek | Poor condition + traffic exposure | Poor | 200 | 1980 |
| Ky 1335 over Georges Creek | Poor condition + traffic exposure | Poor | 158 | 1953 |
| US 421 over Ohio River | High traffic | Fair | 8,975 | 2014 |
| US 421 Escape Ramp over Tiber Creek | High traffic | Fair | 5,533 | 1989 |
| US 421 over Little Kentucky River | High traffic | Fair | 2,170 | 1982 |
| US 421 over Town Branch | High traffic | Fair | 2,170 | 1984 |
| US 421 over Trib To Town Branch | High traffic | Good | 2,170 | 1984 |
| US 42 over Trib To Little Ky River | High traffic | Fair | 1,493 | 1931 |
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.