Bridge conditions in Herkimer County, New York
248 inventoried bridges · 28 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Herkimer County has 28 bridges rated poor out of 248 inventoried, a 11.3% share that puts it well above the national rate of about 7%.
- 28 of the 248 bridges in Herkimer County, New York, are rated in poor condition (11.3%) in the 2025 National Bridge Inventory, as of .
- 119 bridges (48.0%) are rated good and 101 (40.7%) fair.
- The median Herkimer County bridge was built in 1981.
- The busiest poor-rated bridge is Rte I90 over Knapp Creek (built 1954), carrying about 20,495 vehicles a day.
Good 48.0% · Fair 40.7% · Poor 11.3% of 248 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 I90 over Knapp Creek | 1954 | 20,495 | Poor |
| Rte I90 over Sterling Creek | 1954 | 11,303 | Poor |
| Rte I90 over Sterling Creek | 1954 | 10,248 | Poor |
| Dyke Road over Ferguson Creek Ferguson | 1965 | 6,235 | Poor |
| Rte 5 over Bridenbecker Crk | 1940 | 5,595 | Poor |
| West Main Street over Moyer Creek | 1900 | 4,343 | Poor |
| Higby Road over 5S 5S 23021063 Rte 5S | 1968 | 3,619 | Poor |
| Rte 28 over West Canada Creek | 1936 | 3,027 | Poor |
| Rte 5 over E Canada Creek | 1931 | 2,866 | Poor |
| Railroad Street over CSX Trans/amtrak Nys Ba | 1981 | 2,686 | Poor |
| Rte 51 over Unadilla River | 1937 | 1,531 | Poor |
| Rte 29 over Spruce Creek | 1931 | 1,465 | Poor |
| Shells Bush Road over West Canada Creek | 1989 | 688 | Poor |
| Rte 80 over Otsquago Creek | 1930 | 644 | Poor |
| Military Road over Beaver Creek | 1994 | 488 | Poor |
| Harvey Bridge Rd over West Canada Creek | 1895 | 239 | Poor |
| Service Road over Erie Barge Canal | 1913 | 100 | Poor |
| Newport Road over Shedd Brook | 1928 | 95 | Poor |
| Moyer Road over Otsquago Creek | 1930 | 93 | Poor |
| Brice Road over Moyer Creek | 1930 | 50 | Poor |
| Billy Hamlin Road over Mill Creek | 1965 | 47 | Poor |
| Hansen Avenue over Mohawk River | 1939 | 45 | Poor |
| Tibbitts Rd over Nowadaga Creek | 1955 | 41 | Poor |
| Tea Cup Street over Mill Creek | 1920 | 36 | Poor |
| Moss Road over Erie Barge Canal | 1910 | 19 | Poor |
| Snowmobile Trail over N Br Moose River | 1895 | – | Poor |
| Pine Bush Road over Tributary To Fulmer Cree | 1950 | – | Poor |
| First Ave Ext. over Trib To McGowan Creek | 1965 | – | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I90 over NYS Route 28 RTE 28 | 1954 | 20,495 | Fair |
| Rte I90 over NY Route 5 RTE 5 West | 1994 | 20,495 | Good |
| Rte I90 over Bridenbaker Creek | 1954 | 20,495 | Fair |
| Rte I90 over Burch Creek | 1954 | 20,495 | Fair |
| Rte I90 over Knapp Creek | 1954 | 20,495 | Poor |
| Rte I90 over Woods Creek | 1954 | 20,495 | Fair |
| Rte I90 over Budlong Creek | 1954 | 20,495 | Fair |
| Rte I90 over Exit 30 Ramp | 1955 | 19,533 | Fair |
| Rte 5 over Hydraulic Canal | 1949 | 16,239 | Fair |
| Rte 5 over Ex - CSX Transprtation | 1949 | 14,044 | 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.