Mankato (KMKO)-The city of Mankato will hold an open house to let citizens know about the new bus routes.  The meeting will be held tomorrow from 3:30 to 5:30 pm in the parking lot at the corner of Front and Cherry Streets.  In case of inclement weather, it will be held in the LeSueur Room at the Intergovernmental Center.  The new bus routes will go into effect on August 27th.  City of Mankato staff, study partners and consultants will be at the open house to discuss the Greater Mankato Transit Redesign Study. For more information, call 387-8655.