Bridge conditions in Niagara County, New York
267 inventoried bridges · 24 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 267 bridges in Niagara County: 73 rated good, 170 fair, and 24 poor.
- 24 of the 267 bridges in Niagara County, New York, are rated in poor condition (9.0%) in the 2025 National Bridge Inventory, as of .
- 73 bridges (27.3%) are rated good and 170 (63.7%) fair.
- The median Niagara County bridge was built in 1967.
- The busiest poor-rated bridge is Rte I190 over Rte 104 (built 1962), carrying about 11,962 vehicles a day.
Good 27.3% · Fair 63.7% · Poor 9.0% of 267 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 I190 over Rte 104 | 1962 | 11,962 | Poor |
| Main Street over Erie Canal | 1912 | 7,684 | Poor |
| Rte 104 over Eighteenmile Creek | 1929 | 6,759 | Poor |
| Gasport Road over Eighteen Mile Crk | 1916 | 4,212 | Poor |
| Rte 957A over Rock Cut | 1963 | 2,162 | Poor |
| Rte 18 over Twelve Mile Creek | 1930 | 2,101 | Poor |
| Rte 93 over Tonawanda Creek | 1960 | 2,052 | Poor |
| Rte 77 over Eighteen Mile Creek | 1918 | 1,780 | Poor |
| Plaza Drive over Bergholtz Creek | 1981 | 1,287 | Poor |
| Rte 271 over Erie Canal | 1915 | 866 | Poor |
| Rte 957A over Fourmile Creek | 1967 | 633 | Poor |
| Hartland Road over Golden Hill Creek | 1948 | 625 | Poor |
| Aiken Road over Bull Creek | 1948 | 546 | Poor |
| Royalton Ctr Road over Mud Creek | 1964 | 437 | Poor |
| Townline Road over Johnson Creek | 1966 | 396 | Poor |
| East Avenue over Eighteen Mile Crk | 1959 | 262 | Poor |
| Hartland Road over Fish Creek | 1951 | 239 | Poor |
| Francis Street over Jeddo Creek | 1985 | 214 | Poor |
| Johnson Creek Rd over Golden Hill Creek | 1958 | 154 | Poor |
| Hunt Street over Bergholtz Creek | 1940 | 94 | Poor |
| Mainland to Green over Niagara River | 1901 | 50 | Poor |
| Goat Is-green Is over Niagara River | 1901 | 50 | Poor |
| Slayton Settmt Rd over Erie Canal South Trail | 1911 | – | Poor |
| North Adam Street over Erie Canal | 1918 | – | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I190 over 190i190i54011065 Rte I1 | 1962 | 48,740 | Fair |
| Rte I190 over Lasalle Expy WB Ramp to | 2010 | 44,147 | Good |
| Rte 62 over Sawyer Creek | 1998 | 27,573 | Fair |
| Rte 78 over Mud Creek | 1969 | 27,267 | Fair |
| Rte 78 over Donner Creek | 1969 | 27,267 | Fair |
| Rte I190 over Rte 384 | 2014 | 24,370 | Fair |
| Rte I190 over 62 62 54044024 Rte 62 | 1964 | 22,074 | Fair |
| Rte I190 over Girard Avenue | 1964 | 22,074 | Fair |
| Rte I190 over 62 62 54044024 Rte 62 | 1964 | 20,310 | Fair |
| Rte I190 over Girard Avenue | 1964 | 20,310 | Fair |
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.