Veteran developer Martin Ginsburg (third from left) was joined by a host of county and city officials at the River Tides groundbreaking. Veteran developer Martin Ginsburg (third from left) was joined by a host of county and city officials at the River Tides groundbreaking.

YONKERS, NY—Westchester County Executive Robert Astorino, Yonkers Mayor Mike Spano and other state and city officials joined Ginsburg Development Corp. in cutting the ribbon on its $100-million River Tides at Greystone luxury rental apartment project.