Sd036 over Grace Coolidge Ck
Good Condition37 years old955 vehicles/day
Location
| State | South Dakota |
| County | Custer |
| Location | 0.6 E Jct US 16a |
| Carries | Sd036 |
| Crosses | Grace Coolidge Ck |
| Coordinates | 43.77421, -103.33144 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 25.3 ft (7.7 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Area | 84.7 sq m |
| Main Spans | 2 |
| Year Built | 1989 |
Traffic
| Avg Daily Traffic | 955 (2024) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 821 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000017364065 |