Crusher run weighs approximately 2,500 lbs. per cubic yard. The depth of the crusher run base recommended in inches will vary depending on the project. What is Crusher Run used for? For driveway installation, a foundation of crusher run can add years to your driveways life. Dense Grade, sometimes called quarry stone is a dense grade aggregate, crusher run, and road stone. It is a combination of small, 3/4-inch-or-less crushed stone and stone dust. Most often it is made out of crushed limestone, granite-gneiss, trap rock or a combination of the aforementioned. Mar 15, 2020 Finish the driveway with 4 inches of crush and run gravel. Cover the driveway with the gravel and tamp it in place using the mechanical roller. Create a crown on the driveway by making an arch in the middle, this allows the driveway to drain easily when it rains.