RD 56 over W F Thompson Riv
Fair Condition91 years old50 vehicles/day
Location
| State | Montana |
| County | Sanders |
| Location | Thompson River |
| Carries | RD 56 |
| Crosses | W F Thompson Riv |
| Coordinates | 47.64237, -115.17689 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 78.1 ft (23.8 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 19.4 ft (5.9 m) |
| Deck Area | 140.4 sq m |
| Main Spans | 1 |
| Year Built | 1935 |
Traffic
| Avg Daily Traffic | 50 |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | U.S. Forest Service |
| Historical Significance | Historical significance is not determined |
| Structure Number | 011605000000009 |