Upcoming winter weather prompts closures and schedule changes for the City of Independence. Riverside Park and Ralph Mitchell Zoo will be closed Thursday and Friday. Trash pickup services will be canceled on Thursday and Friday as well. Residents can drop off trash at the city Sanitation Yard at 21^st and Maple from 8 am to 2 pm. Commercial sanitation pickup routes will resume on Saturday if the weather permits. Next week, the Christmas Holiday will be observed on Monday, and all sanitation services will be shifted by one day, with services resuming Tuesday, December 27^th and running Monday routes.