The Illinois Road & Transportation Builders Association (IRTBA) was formed in 1938 to promote the transportation needs of the state and is now the largest statewide organization of companies designing, building and maintaining the state highways, transit systems, railways and aviation systems. The core purpose of IRTBA is to advance and promote the transportation design and construction industry in Illinois. Our success is shared equally by all contractors and designers, regardless of their specialty.

On behalf of the 350+ member firms, we hope you find our site helpful in providing background on our association as well as answering any questions you have on transportation issues in Illinois. 

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