Knowlesville Road over Erie Canal
Orleans County, New York · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Knowlesville Road over Erie Canal in Orleans County, New York, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1910 and reconstructed in 2018, making it 115 years old at the 2025 inventory.
- It carries about 1,618 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 69 of the 138 inventoried bridges in Orleans County rated fair (50.0%); 23 (16.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (43.24266, -78.31062)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel movable lift |
| Length | about 145 ft |
| Location | 4.3 Mi E Jct Bg Cnl &SH63 |
| NBI structure number | 000000004445180 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New York department of transportation.
Busiest bridges in Orleans County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte 31 over Jeddo Creek | 1946 | 6,277 | Poor |
| Rte 63 over Erie Canal | 1914 | 5,298 | Fair |
| Rte 31A over Oak Orchard Creek | 1946 | 4,737 | Fair |
| Rte 98 over Erie Canal | 1914 | 4,319 | Poor |
| Rte 63 over Oak Orchard Creek | 1992 | 4,288 | Fair |
| Rte 63 over Oak Orchard Creek | 1992 | 4,288 | Fair |
All bridges nearby: Orleans County, NY bridge conditions · every bridge in Orleans County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.