DALLAS — Post Properties is developing a mixed-use project located at the southeast corner of Campbell Street and Central Expressway in Dallas. The property will include 80,000 square feet of retail, approximately 200,000 square feet of office space, 435 residential units, a 1-acre park and an amphitheater all near the DART rail line. The complex, which broke ground in November 2006, will house four, four-story buildings. Amenities included at Post Eastside include two swimming pools, an outdoor cabana, a club room, free Wi-Fi in common areas, a fitness center and an Internet Caf. Retailers at the development will include Panera Bread, Boudreaux’s Cajun Kitchen, Dr. Goad Dentistry and Frost Bank. The first building in the residential portion of the property is scheduled for completion on May 1.