Bridge conditions in Seneca County, New York
60 inventoried bridges · 16 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 60 Seneca County bridges in the federal inventory, 16 carry a poor rating. That 26.7% share is roughly 4x the national average.
- 16 of the 60 bridges in Seneca County, New York, are rated in poor condition (26.7%) in the 2025 National Bridge Inventory, as of .
- 19 bridges (31.7%) are rated good and 25 (41.7%) fair.
- The median Seneca County bridge was built in 1959.
- The busiest poor-rated bridge is Rte 5 over Cay & Sen Canal (built 1932), carrying about 12,332 vehicles a day.
Good 31.7% · Fair 41.7% · Poor 26.7% of 60 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte 5 over Cay & Sen Canal | 1932 | 12,332 | Poor |
| Rte 31 over Erie Canal | 1949 | 1,853 | Poor |
| Rte 89 over 90IX Rte I90 | 1953 | 1,304 | Poor |
| Gorham Street over Seneca River | 1916 | 900 | Poor |
| Gilbert Road over Tommy Creek | 1983 | 723 | Poor |
| Yellow Tavern Rd over Kendig Creek | 1950 | 722 | Poor |
| Marshall Road over Kendig Creek | 1950 | 600 | Poor |
| Locust Street over Cayuga & Seneca Canal P | 1914 | 503 | Poor |
| County Road 153 over Sheldrake Creek | 1994 | 319 | Poor |
| Armitage Road over Erie Canal | 1914 | 275 | Poor |
| Frontenac Road over Trumansburg Creek | 1940 | 164 | Poor |
| Wyers Point Road over Groves Creek | 1936 | 105 | Poor |
| Potter Morgan Road over Sheldrake Creek | 1920 | 83 | Poor |
| Arden Rd over Boardman Creek | 1973 | 47 | Poor |
| Hall Road over Sheldrake Creek | 1958 | 35 | Poor |
| Dean Road over Mill Creek | 1936 | 34 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I90 over Old Seneca River | 1954 | 30,538 | Fair |
| Rte I90 over Black Brook | 1953 | 30,538 | Fair |
| Rte I90 over Cayuga-seneca Canal | 1953 | 16,708 | Fair |
| Rte I90 over Seneca River | 1953 | 15,269 | Fair |
| Rte 5 over Cay & Sen Canal | 1932 | 12,332 | Poor |
| Rte 96A over Cayuga-seneca Canal | 1962 | 9,979 | Fair |
| Rte 414 over 90IX Rte I90 | 2000 | 8,921 | Good |
| Rte 318 over Black Brook | 1962 | 8,694 | Fair |
| River Road Conn. over Cayuga-seneca Canal | 1993 | 7,110 | Good |
| Rte 414 over Black Brook | 2012 | 5,939 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of New York: New York bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.