SCAM ALERT: A current text message smishing scam claims recipients owe money associated with traffic tickets, tolls and other fines. These are not legitimate messages from the Illinois Department of Transportation. If you receive a message report it to the Federal Trade Commission and/or the FBI’s Internet Crime Complaint Center.

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.

Prequalification and Registration

Partnering with the IDOT begins with vendor registration and bid prequalification. All truckers and suppliers must register with IDOT to be eligible to bid or quote on subcontracts. For firms seeking to work as contractors or consultants—whether in construction, engineering, land surveying, or architecture—prequalification is a mandatory step. Updated directories of prequalified contractors, subcontractors, consultants, and firms are posted regularly, helping firms track their status and explore available work categories.

Application Portal

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

Highways Procurement Policy Review (HPPR)

Review highway procurement policies

Vendor Documents System

Electronic document filing system

EPAS

Online access for applying to provide services to IDOT