RTE 421 over Bog River
Fair Condition101 years old187 vehicles/day
Location
| State | New York |
| County | St. Lawrence |
| Location | 0.2 Mi W Jct Rts 421 + 30 |
| Carries | RTE 421 |
| Crosses | Bog River |
| Coordinates | 44.12868, -74.54486 |
Condition Ratings
| Overall Condition | Fair |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 82.0 ft (25 m) |
| Max Span | 77.8 ft (23.7 m) |
| Deck Width | 24.6 ft (7.5 m) |
| Deck Area | 187.5 sq m |
| Main Spans | 1 |
| Year Built | 1925 (reconstructed 1997) |
Traffic
| Avg Daily Traffic | 187 (2020) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 000000001048280 |