The ACPA Network The purpose of the ACPA Network (including the Chapter/States and Allies) is to expand the use and improve the quality of concrete pavement for highways, airports, streets, roads and commercial facilities. This network exists primarily in the contiguous United States. Please click on a state or commonwealth to find your local ACPA-affiliated chapter or state paving association. You will be redirected to an email if you select an unaffiliated area. For additional information about the affiliated chapters and state paving associations, contact Leif Wathne, P.E., at 202.638.2272.