Sac County officials have announced several streets in Sac City will be closed Sunday and Monday for the thousands of RAGBRAI riders visiting the community. Main Street, also known as County Road D36, will be inaccessible to vehicular traffic from 9th Street to 3rd Street beginning at 10 a.m. July 25. South 16th Street on the west side of town will also be closing at 10 a.m. from W. Main to Gishwiller Streets. The roads will reopen to motorists once the riders and the support teams have left town Monday, July 26. Questions about these closures should be directed to Sac City Hall at 712-662-7593.