State Highway 200 over Garrison Dam Spillway
Good Condition71 years old995 vehicles/day
Location
| State | North Dakota |
| County | McLean |
| Location | 1 Mile SW Of Riverdale |
| Carries | State Highway 200 |
| Crosses | Garrison Dam Spillway |
| Coordinates | 47.48978, -101.38883 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Girder and Floorbeam |
| Total Length | 1574.8 ft (480 m) |
| Max Span | 43.6 ft (13.3 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 5,280 sq m |
| Main Spans | 32 |
| Year Built | 1955 |
Traffic
| Avg Daily Traffic | 995 (2019) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | Corps of Engineers |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 200-178-423 |