Winter Park Towers Independent Living Apartments, Winter Park, Florida. The project is one (1) four-story and one (1) five-story apartment building with a total of 54 apartment units and a new bridge from the garage to an existing tower. The structure is a two-way post-tensioned floor slab supported by concrete columns with infill concrete block walls or one-way post-tensioned floor slab with masonry bearing walls. The construction cost is estimated to be $20 million with parking structure. McElroy Engineering provided full Threshold Inspection Services and construction administration for the project.