The Mogollon Street Public Works Yard will start to come down on Monday. Officials with the City of Flagstaff say this is the first phase of demolition and site clearing and it is expected to last several weeks. The yard is located near Flagstaff High School at 419 North Mogollon Street. After the site is cleared, fencing will be re-installed for security. Public hearings will be scheduled at a later date for consideration of future use of the space. The yard became vacant after the city constructed a new works yard off West Route 66.