Illinois Department of Transportation	www.dot.state.il.us
Illinois Toll Highway Authority	www.illinoistollway.com
Illinois Road and Transportation Builders Association	www.irtba.org
Transportation for Illinois Coalition	www.tficillinois.org
National Asphalt Pavement Association	www.hotmix.org
Illinois Asphalt Pavement Association	www.il-asphalt.org
Illinois Association of Aggregate Producers	www.iaap-aggregates.org