The City does not recommend repairing the sidewalk without addressing the tree root problems if that caused the unsafe sidewalk conditions. Sometimes, tree roots can be safely trimmed in a way that does not affect the stability of the tree. Any cutting of tree roots 2″ or bigger must be approved by City staff or a Certified Arborist. If a Certified Arborist other than the City’s certified Arborist is used, you must provide written documentation that the tree roots can be safely trimmed. If the tree roots cannot be safely trimmed, it is recommended that the tree be removed. A Certified Arborist can help determine if the tree roots can be safely trimmed.