Here’s a quick and easy fix to remove a safety hazard. This Kirkland, Washington city crew is putting sidewalk shims where there’s a tree-root intrusion pushing up the sidewalk panels. This method is a stopgap until the tree is removed, or an arborist suggests a severe root pruning. If the latter happens, they’ll put the panel back using concrete so it matches. (These guys also use EZ Street for pothole repairs, and they love it.)