Since 1913 Rock Road Companies, Inc. has paved the way on public and private projects in Southern Wisconsin and Northern Illi ... nois. We provide highway construction materials and services including: asphalt production and paving, earthmoving, site development, underground construction, quality control, survey and staking, and project management. We are proud to employ approximately 200 people between the corporate headquarters in Janesville, our business office in Rockford, and asphalt plants, pits and quarries that are located throughout southern Wisconsin and northern Illinois. read more