We have a huge maple tree in front of our house in the city right of way between the road and the sidewalk. It's a beautiful tree but its roots are all over my front yard making mowing the lawn more difficult. They might also be contributing to the roots in my sewer pipe that has to be snaked out every couple of years. If I cut these roots along the edge of the sidewalk (and then remove them from my front yard), how likely is it that this will damage the tree to the extent that it might one day fall? That is, the tree might fall one day regardless or it might stand healthy and tall for another 100 years, but is it likely that I will severely damage the tree by cutting off those pesky roots?