The reopening ceremony set for 11:30 a.m. will feature county Chief Executive Dan Onorato, U.S Rep. Jason Altmire and other officials who helped secure funding for the project.
The 97-unit complex includes full apartments for independent living for seniors and is adjacent to supportive services. It has more than 200 people on a waiting list.
Orion Development wants Ross Township to rezone the 1.78-acre corner lot to permit limited commercial use, but residents don't want more business or traffic there.
Allegheny County and the U.S. Army Corps of Engineers are wrapping up a two-year project to make the lake suitable for fishing, canoeing and recreation.