American Association of State Highway and Transportation Officials (AASHTO)

American Concrete Institute (ACI)

American Concrete Pavement Association (ACPA)

American Concrete Pavement Association (ACPA) Pennsylvania Chapter

American Traffic Safety Services Association (ATSSA)

Asphalt Institute

Asphalt Recycling & Reclaiming Association (ARRA)

Associated Pennsylvania Constructors (APC)

Central Pennsylvania Engineers Week Council (CPEWC)

Concrete Pavement Technology Program (CPTP)

Construction Equipment

Construction Materials Recycling Association (CMRA)

DiscoverE (formerly National Engineers Week Foundation)

Federal Highway Administration (FHWA)

Green Highways Partnership (GHP)

National Asphalt Pavement Association (NAPA)

National Concrete Pavement Technology Center (CP Tech Center)

Pennsylvania Aggregate and Concrete Association (PACA)

Pennsylvania Asphalt Pavement Association (PAPA)

Pennsylvania Department of Transportation (PennDOT)

Pennsylvania General Assembly – Find Your Legislator

Pennsylvania Highway Information Association (PHIA)

Pennsylvania One Call System

Portland Cement Association (PCA)

The Asphalt Contractor Online

The National Center for Asphalt Technology (NCAT)

The Turner-Fairbank Highway Research Center

Transportation Research Board (TRB)

U.S. Department of Transportation