The project involved careful planning and construction to rehabilitate 113 Brattle St.—one of Cambridge’s most historic addresses—as well as build an expansion onto the back of the building.

A high-rise tower with mixed-income apartments will soon rise in Cambridge’s Central Square above existing brick and other low-rise buildings that harken back to earlier days.

Well before construction of the MIT.nano building began last summer, Massachusetts Institute of Technology’s senior project manager Travis Wanat spent months spearheading an effort to determine the prime location for the reported $350-million facility for nanoscience and nanotechnology research.