Transportation, Department of



Transportation, Department of, Department ofOur mission is to provide safe, cost-effective transportation for Illinois’ residents and visitors in ways that enhance quality of life, promote economic prosperity and demonstrate respect for the environment.217-782-7820




Bicycling in Illinois in IllinoisIllinois seeks to develop bicycle policies that promote safe, sustainable and fiscally responsible bicycling in Illinois.
Analytical Chemistry Approval Analytical Chemistry ApprovalAnalytical chemistry provides the chemical testing for a wide variety of highway materials, ensures that quality materials are used in highway projects by maintaining a system of sampling, testing, documentation, and reporting of test results for focus areas including: pavement marking materials, reflective sheeting, bridge coatings, and miscellaneous items. Analytical chemistry also maintains cement and concrete reference laboratory (CCRL) accreditation for cementitious materials. Provides information regarding the process and how to get materials approved.
Construction Procurements ProcurementsIn order to perform construction work for IDOT, contractors must first seek prequalification in specialized categories. Once prequalified, a firm is eligible to submit a bid on state and local advertised projects. If awarded the contract, the firm follows department rules and regulations until fulfillment of the contractual obligation.
Metals Material Approval Material ApprovalContractual metals and miscellaneous materials used in the State’s highway construction and maintenance programs are required by both the Federal Highway Administration and the State of Illinois Departmental Policy. In addition to materials testing the Department has several certification/qualification/approval programs requiring field inspection either at the manufacturing location or the job site.
Precast/Prestress Material Approval Material ApprovalFocus areas include quality control/quality assurance programs for Precast Concrete and Precast Prestressed Concrete products. Provides information regarding the process and how to get materials approved.
Producer/Supplier Approval ApprovalThere are approximately 13,000 (active/inactive) producers and/or suppliers listed with IDOT. Producers and/or suppliers interested in providing materials to be used in construction projects must first obtain approval by the department.
Soils Material Approval Material ApprovalProvides process and how to get soil materials approved.
Oversize/Overweight Permits PermitsIDOT may, at its discretion, upon application and good cause being shown therefore, issue special permits authorizing applicants to operate or move a vehicle or combination of vehicles of a size or weight of vehicle or load exceeding the maximum specified in this Act or otherwise not in conformity with this Act upon any highway under the jurisdiction of the state of Illinois.
Register for Traffic Alerts for Traffic AlertsA free service that provides email notifications of up to date traffic information on user-selected trips along the expressways in the Travel Midwest coverage area.
Road Construction Contract Status System Construction Contract Status SystemPrequalification procedures for contractors helping firms become eligible to submit a bid on state and local advertised projects.
Utility Permits PermitsProvides the process and resources for applying for a permit for Utility Work in right-of-way (new installations, maintenance of existing utilities and utility relocations; mainly for municipalities and utility companies.)
Find State Road Project Information State Road Project InformationThis section of IDOT's website showcases projects that the department seeks to keep the public updated on. Utilizing the map and lists provided on this site, you will find significant information on featured projects such as overview, benefits, scope, public involvement and timely news, status and updates on current construction projects.
Agregate Material Approval Material ApprovalVarious tests, including quality, freeze-thaw and alkali-silica reactivity (ASR) are performed on aggregates used for road and bridge construction in Illinois. These tests quantify the physical characteristics of each aggregate product from each source. Development and evaluation of all statewide aggregate related policies, procedures and specifications are continually modified to keep them current with new technologies and test procedures. Provides information regarding the process and how to get materials approved.
Pilot Registration RegistrationPilots who reside in Illinois are required to register their federal certificate with the state.
Land Acquisition Procurements -acquisition-procurementsLand Acquisition ProcurementsExtensive land acquisition activity is often required to complete IDOT's Multi-Year Multi-Modal Transportation Improvement Program. To accomplish the program without appreciably increasing the number of IDOT personnel or performing services for which the department does not have specialized expertise, the department utilizes outside vendors.
Cement Material Approval Material ApprovalFocus areas include testing, acceptance and approval of portland and blended cement, other special cements, ground granulated blast furnace slag (GGBF), microsilica (silica fume), high reactivity metakaolin, fly ash, and other miscellaneous cement products. Other focus areas include research studies regarding cement and finely divided mineral applications, and methods for improving cement and finely divided mineral quality throughout the state.
Gateway Traveler Information System Interactive Map Traveler Information System Interactive MapWeather, construction, road closure maps
Illinois Roads Interactive Map Roads Interactive MapWeb-based interactive mapping site that provides the ability to search and display several sources of transportation data. You can find information on winter road conditions, annual average daily traffic, road construction, trucking routes, and planned road projects.
Airport & Heliport Certification & Heliport CertificationIDOT is empowered and directed to encourage, foster and assist in the development of aeronautics in this state and to encourage the establishment of airports and other air navigation facilities. The Division of Aeronautics classifies and approves airports and restricted landing areas and any alterations or extensions thereof.
Illinois Bridge Information Search Bridge Information SearchOffers offer bridge inspection and inventory information to the public.