Koocanusa Bridge over Koocanusa Reservoir
Fair Condition55 years old75 vehicles/day
Location
| State | Montana |
| County | Lincoln |
| Location | Lake Koocanusa |
| Carries | Koocanusa Bridge |
| Crosses | Koocanusa Reservoir |
| Coordinates | 48.82794, -115.27090 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Truss - Deck |
| Total Length | 2437.0 ft (742.8 m) |
| Max Span | 2381.9 ft (726 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 7576.6 sq m |
| Main Spans | 6 |
| Year Built | 1971 (reconstructed 1983) |
Traffic
| Avg Daily Traffic | 75 (1990) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | U.S. Forest Service |
| Historical Significance | Historical significance is not determined |
| Structure Number | 011401000000046 |