SIKESTON, Mo., (KBSI) — A water main break is affecting several neighborhoods in Sikeston and prompting a precautionary boil advisory. According to the Sikeston Board of Municipal Utilities, crews responded Thursday afternoon to a break on the south end of Allen Boulevard. The road is closed to through traffic at Cresap Street. Officials said water service has been impacted for residents on Fletcher Avenue, with additional areas now affected, in…