Speedway Business Park Speedway Business Park is located adjacent to interstate 85 on Porter Road. The park is curbed and guttered with a portion of water, sewer, gas and phone service underground. Some landscaping in place. The park currently has 10 tracts of land ranging in size from 1 acre to 10 acres. The Rowan County Manager's office is responsible for the marketing and sale of sites in the Park. Additional information can be found on their website. Click her to visit it.