Many of Eugene's trees were planted in the late 1800's and early 1900's giving <br /> them an average of 70 -100 years. Trees deteriate with age. The source of <br /> the more severe incidents is the older trees lining our streets. Many old <br /> cuts and broken branches have produced sources of rot and decay making large . <br /> sections of our older trees an accident waiting to happen! <br /> The aging of Eugene's Urban Forrest and lack of adequate maintenance will <br /> increase the City's Liability exposure as time marches on. <br />