Porcupine CR Road over Gallatin River
Fair Condition75 years old99 vehicles/day
Location
| State | Montana |
| County | Gallatin |
| Location | Gallatin Canyon |
| Carries | Porcupine CR Road |
| Crosses | Gallatin River |
| Coordinates | 45.22590, -111.24942 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 133.9 ft (40.8 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 17.7 ft (5.4 m) |
| Deck Area | 220.3 sq m |
| Main Spans | 4 |
| Year Built | 1951 (reconstructed 2008) |
Traffic
| Avg Daily Traffic | 99 |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | U.S. Forest Service |
| Historical Significance | Historical significance is not determined |
| Structure Number | 011106000000109 |