Postal Facility VMF Replacement, Port St. Lucie, Florida. The project includes a new VMF replacement facility at the U.S. Postal Facility in Port St. Lucie, FL. The project is a single story building with approximately 12,784 SF. The facility is exterior and interior masonry bearing walls and steel joist roof system. The roof is flat with 1 ½” metal deck and tapered insulation.