Sd030 over Six Mile Ck
Fair Condition70 years old1,199 vehicles/day
Location
| State | South Dakota |
| County | Brookings |
| Location | 3.4 E I 29 Interch |
| Carries | Sd030 |
| Crosses | Six Mile Ck |
| Coordinates | 44.42696, -96.68767 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 119.1 ft (36.3 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 34.4 ft (10.5 m) |
| Deck Area | 381.1 sq m |
| Main Spans | 4 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 1,199 (2024) |
| Truck Traffic | 21% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000006219080 |