ROAD CLOSED; SEEK ALTERNATE; FOR 1 BLOCK BETWEEN MIDDLE COUNTRY RD   OLD MIDDLE COUNTRY RD:  WATER MAIN BREAK ; ROAD SANDED, MIDDLE COUNTRY RD IS OPEN, ROUND THE BLOCK DETOUR IS LIGHT ON OLD MIDDLE COUNTRY RD; ALTERNATES: COUNTY RD 83  PATCHOGUE MOUNT SINAI RD , MOUNT SINAI CORAM RD.