Rte 30 over Lake Duane Inlet
Franklin County, New York · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rte 30 over Lake Duane Inlet in Franklin County, New York, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1962, making it 63 years old at the 2025 inventory.
- It carries about 1,357 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 63 of the 188 inventoried bridges in Franklin County rated fair (33.5%); 22 (11.7%) are rated poor.
- 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 → (44.69791, -74.31574)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Steel culvert |
| Length | about 37 ft |
| Location | 3 Mi N Jct SH 30 & C R 26 |
| NBI structure number | 000000001072350 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New York department of transportation.
Busiest bridges in Franklin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte 11 over Salmon River | 1947 | 18,077 | Fair |
| Rte 37 over St Regis River | 1990 | 12,703 | Fair |
| Rte 37 over Raquette River | 2004 | 12,703 | Good |
| Rte 3 over Trib.Lyon Bk | 1967 | 7,665 | Good |
| Broadway over Saranac River | 1922 | 6,596 | Fair |
| Rte 3 over Saranac River | 1984 | 4,841 | Fair |
All bridges nearby: Franklin County, NY bridge conditions · every bridge in Franklin County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.