Delaware Asphalt Paving Association. Since 1966 we have worked hand in hand with DELDOT to ensure we are at the forefront of the asphalt industry. SINCE 1966 DAPA HAS PARTNERED WITH DELDOT TO GAIN ADVANCED KNOWLEDGE AND INVENTIVE INSIGHT INTO TODAY'S ASPHALT INDUSTRY. THE INDUSTRY HAS CONSISTENTLY EVOLVED THROUGH THE YEARS AND DAPA HAS ENSURED THAT DELAWARE'S ASPHALT PRODUCERS AND CONTRACTORS EVOLVE WITH IT. DAPA WORKS CLOSELY WITH ALL ITS MEMBERS SHARING BEST PAVING PRACTICES, GROUNDBREAKING TECHNOLOGIES, AND QUALITY TESTING PROCEDURES. OUR FOUNDING MEMBERS HELPED PAVE THE FUTURE OF DELAWARE'S ASPHALT INDUSTRY AND AS A UNIFIED GROUP WE CAN CONTINUE TO BUILD, SHAPE, AND FORM OUR STATE'S ROADS.