Old Shelby RD over Dry Fk Marias River 013
Good Condition56 years old79 vehicles/day
Location
| State | Montana |
| County | Pondera |
| Location | 3m NE Conrad |
| Carries | Old Shelby RD |
| Crosses | Dry Fk Marias River 013 |
| Coordinates | 48.21579, -111.91793 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 133.9 ft (40.8 m) |
| Max Span | 65.0 ft (19.8 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 375.4 sq m |
| Main Spans | 2 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 79 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L37101003+00001 |