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Custer County
| Name | Location | Status | Design | Year Built | Year Lost | Span Length (ft.) | Total Length (ft.) |
|---|
| Beaver Creek Bridge | SD 87 over Beaver Creek | Open to traffic | Open-spandrel arch | 1929 | -- | 120.1 | 220.2 |
| Cheyenne River Bridge | CR 656 over Cheyenne River | Replaced by a new bridge | Parker through truss | 1934 | 2014 | 150.9 | 693.9 |
| French Creek Bridge | SD 87 over French Creek | Open to traffic | Closed-spandrel arch | 1937 | -- | 32.2 | 69.9 |
| French Creek Bridge | East French Creek Road over French Creek | Open to traffic | Pony truss | 1950 | -- | 68.9 | 69.9 |
| Hood Tunnel | SR 87 under hillside | Open to traffic | Tunnel | -- | -- | -- | -- |
| Iron Creek Tunnel | SR 87 under hillside | Open to traffic | Tunnel | -- | -- | -- | -- |
| Needles Eye Tunnel | SD 87 under | Open to traffic | Tunnel | -- | -- | -- | -- |
| Pigtail Bridge | SD Route 87 over SD Route 87 | Open to traffic | Steel stringer | 1930 | -- | 41.0 | 77.1 |
| RCPE - Beaver Creek Bridge | Rapid City, Pierre & Eastern Railroad over Beaver Creek | Open to traffic | Deck plate girder | 1910 | -- | 40.0 | 80.0 |
| Red Shirt Bridge | Old SD 40 over Cheyenne River | Intact but closed to all traffic | Steel stringer | 1943 | -- | 76.0 | 608.0 |