Agencies
Services
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.