Found this project on the city's website today. The new facility will support 24-hour operations and when finished will accommodate up to 144 buses. Completion is targeted for 2024.
The Detroit Department of Transportation’s [[DDOT), Coolidge Terminal, and Maintenance Facility operated transit service from 1928 until December 2011, when a fire destroyed part of the facility that halted operations. Plans to reconstruct the terminal were placed on hold as Detroit faced the largest municipal bankruptcy in history.
DDOT now proposes to construct a new bus maintenance, storage, and operations center on the existing Coolidge Terminal site at 14044 Schaefer Highway in Detroit, Michigan. The entire Coolidge Terminal site will be cleared, including the demolition of all six existing structures. 
The Coolidge Replacement Facility will accommodate 24-hour operations and initially accommodate 144 buses, with the capacity to expand to up to 216 buses in the future. Both modern 40-foot buses and 60-foot articulated buses  will be stored and maintained at this facility.
 The new facility will provide 245 parking spaces [[230 staff including bus drivers, maintenance, operations, and administrative personnel, and 15 parking spaces for visitors).

https://detroitmi.gov/departments/de...cement-project