Perpetual Pavement Awards Perpetual Pavement Awards (PPA) from the Asphalt Pavement Alliance The Washington State Department of Transportation has won a total of 15 Perpetual Pavement Awards (PPAs) from the Asphalt Pavement Alliance (APA). The awards celebrate...
Diamond Awards The Diamond Commendations encourage and recognize excellence. Continuous improvement in all aspects of operations is the goal. Taken together, the three commendations below provide a blueprint for excellence in all aspects of the industry’s operations,...
