US 550 Ml over Animas River
Fair Condition116 years old28,000 vehicles/day
Location
| State | Colorado |
| County | La Plata |
| Location | In Durango |
| Carries | US 550 Ml |
| Crosses | Animas River |
| Coordinates | 37.28064, -107.87818 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 150.9 ft (46 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 80.1 ft (24.4 m) |
| Deck Area | 1122.4 sq m |
| Main Spans | 3 |
| Year Built | 1910 (reconstructed 1965) |
Traffic
| Avg Daily Traffic | 28,000 (2020) |
| Truck Traffic | 4% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | O-05-J |