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.

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.

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.

Site offers news, bulletin board, membership information and technical advice for hot mix asphalt producers in Illinois.

Promotes the use of concrete pipe and provides assistance to members in the areas of research, product specifications, technical services, education, and promotion.

Serving the interests of members in the heavy road, highway and bridge construction industry. Features news, information, education programs, member benefits, links and contacts.

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.