PennDOT has released its maintenance schedule for Mifflin County for this week. Work includes bridge maintenance on Route 4013 in Oliver Township and Burnham, scheduled for Thursday and Friday. Crack sealing on Route 4006 in Union and Armagh townships will take place all week, while shoulder maintenance on Route 2006 will occur today through Wednesday. Road sweeping will also be performed on several routes, with single-lane closures. PennDOT reminds drivers to stay cautious around crews. They also say weather or other unforeseen circumstances may alter the schedule.