Site Plans Developed in two phases, NorthPark offers more than five million-square-feet of commercial, hospitality and industrial space designed for growing companies looking to expand their Midwest operations. With phase one well under way, preparation for phase two has already begun. The images below outline site plans for the mixed-use development, as well as its boundaries. NorthPark is situated northeast of the I-70/I-170 intersection, with direct paths to major roads, highways, airways and light rail connections. Minutes from Lambert-St. Louis International Airport, NorthPark is the ideal location in a diverse region.