Nfsr 347 over Grayback Gulch
Good Condition8 years old50 vehicles/day
Location
| State | Idaho |
| County | Boise |
| Location | 2.5 Mi SW Of Idaho City |
| Carries | Nfsr 347 |
| Crosses | Grayback Gulch |
| Coordinates | 48.80728, -115.86854 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 89.9 ft (27.4 m) |
| Max Span | 87.6 ft (26.7 m) |
| Deck Width | 16.1 ft (4.9 m) |
| Deck Area | 134.3 sq m |
| Main Spans | 1 |
| Year Built | 2018 |
Traffic
| Avg Daily Traffic | 50 |
| 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 | 040203000032691 |