American Concrete Institute (ACI)
http://www.aci-int.org

American Concrete Pipe Association
http://www.concrete-pipe.org

Asphalt Pavement Alliance (APA)
http://www.asphaltalliance.com

Associated General Contractors (AGC)
http://www.agc.org

Associational Asphalt Paving Technologists (AAPT)
http://www.asphalttechnology.org

International Construction & Utility Equipment Expo (ICUEE)
http://www.icuee.com

National Asphalt Pavement Assoc. (NAPA)
http://www.hotmix.org

National Safety Council
http://www.nsc.org

National Steel Bridge Alliance (NSBA)
http://www.aisc.org/contentNSBA.aspx?id=20074

National Stone, Sand & Gravel Assoc. (NSSGA)
http://www.nssga.org

National Truck Equipment Assoc. (NTEA)
http://www.ntea.com

Portland Cement Association (PCA)
http://www.cement.org

PubWorks
http://www.trackersoftwarecorp.com

Snow & Ice Management Assoc., Inc. (SIMA)
http://www.sima.org

The Road Information Program (TRIP)
http://www.tripnet.org