I029 N over Six Mile Ck
Fair Condition56 years old6,165 vehicles/day
Location
| State | South Dakota |
| County | Brookings |
| Location | 1.1 N Us14 By-pass |
| Carries | I029 N |
| Crosses | Six Mile Ck |
| Coordinates | 44.34256, -96.75789 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 128.6 ft (39.2 m) |
| Max Span | 25.9 ft (7.9 m) |
| Deck Width | 40.7 ft (12.4 m) |
| Deck Area | 486.1 sq m |
| Main Spans | 5 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 6,165 (2024) |
| Truck Traffic | 23% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000006185139 |