Herkimer County Bridge Report Card
Herkimer County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Herkimer County, New York
Herkimer County has 248 bridges in the National Bridge Inventory, with 28 rated poor and 6 rated scour-critical. Its poor-condition share of 11.3% is above the 9.9% statewide average. Poor-condition bridges carry about 75,998 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Herkimer County a Bridge Condition Exposure Score of 63/100 (D). The county has 248 bridges in the National Bridge Inventory, including 28 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 75,998 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 | 11.3% | 22.6 |
| Poor-condition traffic exposure | 25 | 10.0% of measured traffic | 7.5 |
| Scour-critical bridge share | 20 | 2.4% | 4.8 |
| Average age vs national baseline | 10 | 52 years vs 48 nationally | 1.6 |
| Traffic-data completeness | 5 | 759,508 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 | 11.3% |
| State Poor-Condition Share | 9.9% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.4% |
| Average Bridge Age | 52 years |
| Poor-Condition Traffic Exposure | 75,998 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Herkimer County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Dyke Road over Ferguson Creek Ferguson | Poor condition + traffic exposure | Poor | 6,235 | 1965 |
| RTE 5 over E Canada Creek | Poor condition + traffic exposure | Poor | 2,866 | 1931 |
| Harvey Bridge RD over West Canada Creek | Poor condition + traffic exposure | Poor | 239 | 1895 |
| RTE I90 over Knapp Creek | Poor condition + traffic exposure | Poor | 20,495 | 1954 |
| RTE I90 over Sterling Creek | Poor condition + traffic exposure | Poor | 11,303 | 1954 |
| RTE I90 over Sterling Creek | Poor condition + traffic exposure | Poor | 10,248 | 1954 |
| RTE 5 over Bridenbecker Crk | Poor condition + traffic exposure | Poor | 5,595 | 1940 |
| West Main Street over Moyer Creek | Poor condition + traffic exposure | Poor | 4,343 | 1900 |
| Higby Road over 5s 5s 23021063 RTE 5s | Poor condition + traffic exposure | Poor | 3,619 | 1968 |
| RTE 28 over West Canada Creek | Poor condition + traffic exposure | Poor | 3,027 | 1936 |
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.