Rte I90 over Knapp Creek
Herkimer County, New York · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rte I90 over Knapp Creek in Herkimer County, New York, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1954, making it 71 years old at the 2025 inventory.
- It carries about 20,495 vehicles a day (traffic count year 2020).
- It is one of 28 of the 248 inventoried bridges in Herkimer County rated poor (11.3%); 28 (11.3%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (43.09268, -75.14115)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 4 | Poor condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 25 ft |
| Location | 3.6 Mi E of Exit 31 Ramp |
| NBI structure number | 000000005516110 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New York department of transportation.
Busiest bridges in Herkimer 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 Woods Creek | 1954 | 20,495 | Fair |
| Rte I90 over Budlong Creek | 1954 | 20,495 | Fair |
All bridges nearby: Herkimer County, NY bridge conditions · every bridge in Herkimer County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.