0427: Mcnamara Roa over Blackfoot River
Fair Condition62 years old25 vehicles/day
Location
| State | Montana |
| County | Missoula |
| Location | 21 Mi E Of Missoula Mt |
| Carries | 0427: Mcnamara Roa |
| Crosses | Blackfoot River |
| Coordinates | 46.94278, -113.60194 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 195.5 ft (59.6 m) |
| Max Span | 95.5 ft (29.1 m) |
| Deck Width | 14.1 ft (4.3 m) |
| Deck Area | 256.3 sq m |
| Main Spans | 2 |
| Year Built | 1964 (reconstructed 2014) |
Traffic
| Avg Daily Traffic | 25 (2022) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Land Management |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000L59190 |