Us016ae over Us016aw
Fair Condition58 years old3,835 vehicles/day
Location
| State | South Dakota |
| County | Pennington |
| Location | Keystone Interchange |
| Carries | Us016ae |
| Crosses | Us016aw |
| Coordinates | 43.92513, -103.44276 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 8 (Very Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Wood or Timber |
| Design | Arch - Deck |
| Total Length | 290.0 ft (88.4 m) |
| Max Span | 154.9 ft (47.2 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 751.4 sq m |
| Main Spans | 1 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 3,835 (2024) |
| Truck Traffic | 12% |
| Lanes On Bridge | 1 |
| Lanes Under Bridge | 1 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 000000052308412 |