8 of 8 A view of Main Street from the first floor exhibition and performance space of the Colby College Arts Collaborative building in downtown Waterville. Michael G. Seamans/Morning Sentinel WATERVILLE — Colby College’s Arts Collaborative in the downtown is nearing the end of construction and will open to students and fellows at the end of the month. The building at 18 Main St. has been under construction for the last several months. While the space will host student groups in coming weeks, pandemic concerns have limited the college to a soft opening, with an official opening scheduled for the fall. The two buildings at the location have been connected, and while the renovation kept much of the historic brick exterior of the joined buildings, the inside has been completely reimagined.