The owner of property abutting upon any street or sidewalk shall trim the branches of all trees standing along such street or sidewalk so that the branches shall not obstruct the passage of light from any street light to the adjacent street or sidewalk, and he or she shall also trim all branches which overhang any street, alley or sidewalk so that there shall be a clear height of fifteen feet above the street or alley and a clear height of ten feet above the sidewalk. Owners shall remove all dead, decayed or broken trees, limbs or branches which overhang any street, alley or sidewalk.
(1977 Code § 28-132)