Forest Road over Swan River
Fair Condition70 years old20 vehicles/day
Location
| State | Montana |
| County | Lake |
| Location | Porcupine Creek Road |
| Carries | Forest Road |
| Crosses | Swan River |
| Coordinates | 47.88666, -113.86047 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 231.0 ft (70.4 m) |
| Max Span | 90.9 ft (27.7 m) |
| Deck Width | 15.4 ft (4.7 m) |
| Deck Area | 330.9 sq m |
| Main Spans | 3 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 20 (1992) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | U.S. Forest Service |
| Historical Significance | Historical significance is not determined |
| Structure Number | 011001000000109 |