387th Avenue over Maple River
Good Condition3 years old98 vehicles/day
Location
| State | South Dakota |
| County | Brown |
| Location | 1.8n & 0.7e Of Frederick |
| Carries | 387th Avenue |
| Crosses | Maple River |
| Coordinates | 45.85567, -98.49700 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 205.1 ft (62.5 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 581.2 sq m |
| Main Spans | 3 |
| Year Built | 2023 |
Traffic
| Avg Daily Traffic | 98 (2022) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000007110057 |