For those really curious about details of asphalt concrete construction on California state highways, check out Section 39 of the Caltrans specifications: https

For those really curious about details of asphalt concrete construction on California state highways, check out Section 39 of the Caltrans specifications: https://dot.ca.gov/programs/design/ccs-standard-plans-and-standard-specifications https://dot.ca.gov/programs/design/ccs-standard-plans-and-st... These specifications end up being used by a lot of cities and counties in California as well.