Folsom Street Fair this Sunday. Muni will have reroutes in SoMa. Started Mon Sep 21 Until Sun Sep 27 Folsom Street Fair this Sunday. Muni will have reroutes in SoMa.This weekend M bus shuttles between Balboa Park and Broad & Plymouth. Started Thu Sep 24 Until Sun Sep 27 This weekend M bus shuttles between Balboa Park and Broad & Plymouth.