Rebuilding Our Communities by Keeping aggregates Sustainable Act or the ROCKS Act This bill directs the Department of Transportation to establish a working group of federal, state, tribal, and local stakeholders to conduct a study on the regulatory and legislative improvements necessary to preserve access to covered resources and reduce the costs and environmental impacts of infrastructure projects. ( Covered resources are materials used in the construction and maintenance of roads, buildings, and other facilities, including stone, sand, and gravel.)