Upper Dam over Bog River
Good Condition33 years old2 vehicles/day
Location
| State | New York |
| County | St. Lawrence |
| Location | 3 Mi SW End Of SH 421 |
| Carries | Upper Dam |
| Crosses | Bog River |
| Coordinates | 44.10983, -74.67079 |
Condition Ratings
| Overall Condition | Good |
| Deck | 9 (Excellent) |
| Superstructure | 9 (Excellent) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 44.0 ft (13.4 m) |
| Max Span | 42.0 ft (12.8 m) |
| Deck Width | 14.1 ft (4.3 m) |
| Deck Area | 57.6 sq m |
| Main Spans | 1 |
| Year Built | 1993 |
Traffic
| Avg Daily Traffic | 2 (1996) |
| Truck Traffic | 10% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | Other State Agencies |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000005524530 |