Mailbox RD over Bbwa Canal 087
Fair Condition59 years old100 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | 7m NW Shepherd |
| Carries | Mailbox RD |
| Crosses | Bbwa Canal 087 |
| Coordinates | 45.98613, -108.42623 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.3 ft (7.1 m) |
| Deck Width | 26.6 ft (8.1 m) |
| Deck Area | 59.1 sq m |
| Main Spans | 1 |
| Year Built | 1967 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L56700002+01001 |