Sd036ef (cord #11) over Grace Coolidge Ck
Good Condition25 years old570 vehicles/day
Location
| State | South Dakota |
| County | Custer |
| Location | 4 Mi S. & 5.3 W. Hermosa |
| Carries | Sd036ef (cord #11) |
| Crosses | Grace Coolidge Ck |
| Coordinates | 43.78199, -103.30560 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 24.6 ft (7.5 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Area | 63.8 sq m |
| Main Spans | 2 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 570 (2023) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000017377059 |