| 1. |  | Highway bridge damage showing the treated timber cribbing used by the County Highway Department as a foundation for the bridge decks. Flood dammage from the june 9-10, 1972 flood. | Floods -- Black Hills (S.D. and Wyo.) Floods -- South Dakota -- Rapid City (S.D.) | Highway bridge damage showing the treated timber cribbing used by the County Highway Department as a foundation for the bridge decks. Flood dammage from the june 9-10, 1972 flood. |
