Riverside Summit has spacious 3 and 4 bedroom townhomes. Each home has 3 and a half bathrooms and a 2-car garage. Alpharetta Townhomes from 259,950. Holcomb Bridge Road right next to Ellard Village Alpharetta , GA 30022. 28 Townhomes. The community is located in Alpharetta off of Holcomb Bridge Road between Peachtree Industrial Boulevard and Georgia Highway 400 south of the Windward Parkway and North Pointe areas. Built By Windcrest Homes Inc.