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Welcome to IDOT's new website design! The address for some web pages has changed, so be sure to update any saved favorites as needed.

Illinois Department of Transportation

Consultants

This section outlines the process on how to gain prequalification status, make changes and updates to your information, and also how to renew. It also provides a list of current prequalified firms.

Consultant Prequalification
Land Acquisition
Statement of Interest

Application Portal

Access to a variety of software programs, applications, tools, resources and information.  

EPAS

Online access for applying to provide services to IDOT
Change Order (HPPR)

To view active engineering, architectural, professional service agreements, and/or supplemental agreements please navigate to HPPR
Vendor Documents

Vendor documents system

popular pages

Professional Transportation Bulletin

Administration of the Project