Sidewalks and Curb damage; dead tree limbs

We live on the corner of 96 Howard Avenue/Sixth Street. Trees on Sixth Street side have many dead branches, are touching the house and the roots are lifting the sidewalk. Our other house, next door, 74 Sixth Street also has a tree with many dead branches and very close to the house. We would appreciate if someone from both departments can look at these issues. Thank you very much!