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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

Doing Business

At IDOT, our goal is to streamline the business engagement process, ensuring all stakeholders have access to the essential tools and information needed to work with us. This section serves as a comprehensive, user-friendly resource for businesses looking to connect with the Illinois Department of Transportation (IDOT). Access the Procurement section of the IDOT website for available procurement opportunities, contract compliance resources, and required policies and procedures for vendors. 

Aviation Marketplace

Your comprehensive resource for all things related to aviation certifications and registrations with IDOT.
Industry Marketplace

Your essential hub for tools and information necessary to navigate our requirements and explore collaboration opportunities.
Materials Marketplace

Your essential resource for engaging with IDOT’s material labs and approval processes.
Permit and Sales Marketplace

Your essential hub for navigating IDOT's various permitting processes and sales opportunities.
Public Agency Marketplace

Your go-to resource for engaging with IDOT on compliance and collaboration for public agency activities.

Application Portal

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

Bridge Information System

Bridge inspection and inventory information to the public
Change Order (HPPR)

To view active engineering, architectural, professional service agreements, and/or supplemental agreements please navigate to HPPR
Crash Data App

State wide fatal crash data
Ebids

Electronic bidding
Environmental Survey Request

Environmental Survey Request (ESR) initiates the review for cultural, biological and special waste resources
GIS

This tool offers downloadable roadway, railroad, and structure data by county or statewide
IL UCP Directory

Directory of certified DBE firms
OSOW/ ITAP

Local permitting contacts
Pilot and Plane Registration (PPR)

Illinois Pilot & Plane Registration website
Safety Portal

Access crash reports and crash data
Vendor Documents

Vendor documents system
WCP - Pay Estimates

Pay estimates processed to prime contractors by the Illinois Department of Transportation

Popular Pages

Standard Specifications

CADD

Transportaton Bulletin

OSOW-Overize Overweight Permits

Highway Standards and District Standards

Motor Fuel Tax Distribution