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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 August 20, 2026

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 August 20, 2026.
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.

Every bridge in Niagara County → - all 267, busiest first, each with its own condition record.

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.