Us016a over Grace Coolidge Ck
Fair Condition39 years old1,562 vehicles/day
Location
| State | South Dakota |
| County | Custer |
| Location | 0.2 W Jct Sd 36 |
| Carries | Us016a |
| Crosses | Grace Coolidge Ck |
| Coordinates | 43.77080, -103.34151 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 100.4 ft (30.6 m) |
| Max Span | 35.4 ft (10.8 m) |
| Deck Width | 38.7 ft (11.8 m) |
| Deck Area | 361.1 sq m |
| Main Spans | 3 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 1,562 (2024) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000017359068 |