Trees are maintained on a regular cycle, which is around eleven years. Work crews go through the neighborhoods on a block-by-block basis, making sure that all trees are inspected and pruned if necessary.
A special crew responds to requests to trim branches away from buildings, sidewalks, traffic signs and signals, and to make sure drivers have a clear view of traffic at cross streets. This crew also handles emergency calls about fallen trees and branches. To report a concern, submit an online request.