IRR - US 93 over Nine Pipe Reservoir
Poor Condition93 years old8,158 vehicles/day
Location
| State | Montana |
| County | Lake |
| Location | 5m S Ronan |
| Carries | IRR - US 93 |
| Crosses | Nine Pipe Reservoir |
| Coordinates | 47.43769, -114.09696 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 4 (Poor) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 77.4 ft (23.6 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 217.1 sq m |
| Main Spans | 4 |
| Year Built | 1933 (reconstructed 1950) |
Traffic
| Avg Daily Traffic | 8,158 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00005040+09851 |