Illinois Road and Transportation Builders Association - Serving the interests of members in the heavy road, highway and bridge construction industry. Features news, information, education programs, member benefits, links and contacts. - http://www.irtba.org/
Central Illinois Builders of the AGC (CIB) - Regional chapter of the Associated General Contractors of America. Features details on its three membership programs, education, governmental affairs, labor relations, news and events, buyers' guide, and contact details. - http://www.cibagc.org/
Illinois Concrete Pipe Association - Promotes the use of concrete pipe and provides assistance to members in the areas of research, product specifications, technical services, education, and promotion. - http://www.il-concretepipe.org
American Society of Interior Designers, Illinois Chapter - ASID Illinois offers the state's interior designers with an overview of membership benefits, an events calendar, career and education resources, marketing and advertising opportunities, and contacts. - http://www.asidillinois.com/
IRMCA - Illinois Ready Mixed Concrete Association - Strives to be the voice for the ready mix industry in Illinois; promotes the use of quality ready mixed concrete through educational programs, partnering and events. Features members' area, contacts and links. - http://www.irmca.org/
AGCIL - Associated General Contractors of Illinois - Represents contractors, subcontractors, and associates, and serves its members by promoting the interests of the heavy-highway industry. Education, construction news, events, legislative resources and contacts. - http://www.agcil.org/