As of Oct, Enterprise is reduced from 4 to 2 lanes, construction across from the York University parking lot.
Looks like they're building infrastructure, digging to install large pipes? connected to the pipes that were installed on Birchmont south of Enterprise a few weeks ago?
Or maybe it's another parking lot Unionville GO Station? Would be nice to be able to enter from Enterprise for the majority of people living on the west side of the GO tracks, vs travelling ALL the way to York > YCMA > Unionville GO.