Jefferson County Bridge Report Card
Jefferson County scores 69 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Jefferson County, New York
Jefferson County has 318 bridges in the National Bridge Inventory, with 32 rated poor and 5 rated scour-critical. Its poor-condition share of 10.1% is above the 9.9% statewide average. Poor-condition bridges carry about 56,266 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Jefferson County a Bridge Condition Exposure Score of 69/100 (D). The county has 318 bridges in the National Bridge Inventory, including 32 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 56,266 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 | 6.7% of measured traffic | 5.0 |
| Scour-critical bridge share | 20 | 1.6% | 3.1 |
| Average age vs national baseline | 10 | 54 years vs 48 nationally | 2.4 |
| Traffic-data completeness | 5 | 837,240 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 | 9.9% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.6% |
| Average Bridge Age | 54 years |
| Poor-Condition Traffic Exposure | 56,266 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Jefferson County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| CR 30 over Indian River | Poor condition + traffic exposure | Poor | 460 | 1930 |
| RTE I81 over South Sandy Creek | Poor condition + traffic exposure | Poor | 9,336 | 1961 |
| RTE 342 over RTE I81 RTE I81 | Poor condition + traffic exposure | Poor | 7,799 | 1965 |
| RTE 971h over Black River | Poor condition + traffic exposure | Poor | 6,232 | 1954 |
| RTE I81 over County Road 15 | Poor condition + traffic exposure | Poor | 5,435 | 1965 |
| RTE I81 over County Road 15 | Poor condition + traffic exposure | Poor | 4,824 | 1965 |
| RTE I81 over Mullet Creek | Poor condition + traffic exposure | Poor | 4,212 | 1965 |
| RTE 12e over Perch River | Poor condition + traffic exposure | Poor | 3,648 | 1893 |
| RTE 3 over Mill Creek | Poor condition + traffic exposure | Poor | 2,876 | 1933 |
| RTE 12e over Shaver Creek | Poor condition + traffic exposure | Poor | 2,637 | 1914 |
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.