Rocky Mountain NP Timeline By Taylor Engh 1876 Colorado is Created Sep 4, 1915 Rocky Mountain is Established 1917 First winter sports are introduced 1933 Trail Ridge Road Created 1942 CCC, Civilian Conservation Corp starts in Howell Park 1982 Lawn Lake Dam collapses, kills 3 people, and severely impacts Estes Park 1992 Lily Lake Area purchased and handicapped trail is created 2000 New fall visitor center opens, congressional act required to allow private company to built it outside of the park 2003 Grand Ditch Breach occurs 2010 Trail Ridge Road resurfaced