The following manuals, guides, specifications, and forms are provided to help you do business with IDOT.
The following outlines the general requirements and covenants applicable to all highway construction improvements as well as provisions relating to materials, equipment, and construction requirements for individual items of work on projects awarded by the department.
Hard copies of these books can be purchased, and include the Standard Specifications for Road and Bridge Construction. To order, please navigate to Manuals Sales.
For Airports please utilize the following Standard Specification for Construction of Airports:
This book contains additions and revisions to the Standard Specifications. The Supplemental Specifications are considered part of and should always be used in conjunction with the Standard Specifications. This book is updated every year.
Hard copies of these books are not sold separately, but are included with the purchase of the Standard Specifications for Road and Bridge Construction. To order both books, please navigate to Manuals Sales.
Use the following with the 2016 Standard Specifications:
Use the following with the 2012 Standard Specifications:
Navigate to Guide Bridge Special Provisions (GBSP) to view the provisions that are unique for bridge work.
The following are manuals, guides and forms provided to comply with construction projects for IDOT and local entities.
Please note - the Construction Manual's hyperlinks within the PDF are under construction and should be updated shortly. Thank you for your patience.
The IDOT Construction Manual is compiled to clarify the IDOT Standard Specifications for Road and Bridge Construction and to suggest uniform procedures in highway construction field work. The manual is organized similar to the Standard Specifications.
Construction Memorandums are issued by IDOT's Bureau of Construction to distribute policy information. Please navigate to Construction Memorandums for a list of updates within the past year and a list of memorandums.
The Documentation of Contract Quantities Guide (or “Documentation Guide” for short) is the documentation section of IDOT’s Construction Manual, containing policies which represent the minimum documentation requirements for use by construction personnel for the proper documentation of day to day events as well as contract pay quantities on the state’s highway construction projects. Each IDOT district may require additional documentation due to conditions specific to the District.
Highway Standards show the details of various construction items and are used in conjunction with the Standard Specifications. The applicable Standards are referenced on the cover sheet of the plans. To view the most current DGN files please navigate to Highways Standards.
Construction Inspector's Checklists are issued by IDOT's Bureau of Construction to provide guidance to IDOT and local agency employees for the performance of required inspection for the major categories of work involved in department contracts.
For technical support call (217) 782-2760.
|Concrete Structures Other Than Bridge Decks||03/01/2013|
|Continuously Reinforced PCC Pavement||12/14/2007|
|Drilled Shaft Inspector's Checklist||03/07/2016|
|Earth Excavation and Embankment||03/01/2013|
|Hot Mix Asphalt (HMA) Binder and Surface Course||12/14/2007|
|Hot Mix Asphalt (HMA) Pavement (Full Depth)||12/14/2007|
|Hot Mix Asphalt (HMA) Shoulders||12/14/2007|
|Portland Cement Concrete Pavement||12/14/2007|
|Precast Concrete Box Culverts||03/01/2013|
|Stabilized Subbase, BAM, CAM, PAM & CAM II||12/14/2007|
|Structural Steel Bolting||12/14/2007|
|Traffic Signal Installation||12/14/2007|
IDOT's Bureau of Local Roads and Streets publishes and maintains a manual which establishes uniform policies and procedures for the location, design, and environmental evaluation of highway construction projects on the local highway system. The purpose of this policy is to compile the policies and procedures which govern project location, design, and environmental evaluation into one comprehensive manual.
As of January 1, 2006, all design approvals will be based on the most current electronic version of this manual unless a variance is granted.
Navigate to Local Roads & Streets Special Provisions to view a complete listing of updates to the current Local Roads & Streets Manual.
IDOT has an electronic subscription service with automatic email updates on all changes to the BLRS Manual. To sign up for this free service, please navigate to Stay Connected.
If you have any questions or comments about the manual please email: DOT.BLRDOTMANUAL@Illinois.gov
The Illinois Manual on Uniform Traffic Control Devices (IMUTCD) consists of the National Manual on Uniform Traffic Control Devices (NMUTCD) issued by the Federal Highway Administration as amended by the Illinois Supplement to the MUTCD. Please access the federal MUTCD at the FHWA website for more information.
Summary of Changes: Illinois Supplement to the National MUTCD Summary of Changes
In the interest of statewide uniformity, forward requests for interpretations, experimentation, and changes to the MUTCD or IL Supplement to email@example.com
All materials used on a project must have evidence of materials inspection, in other words, there must be proof that the materials incorporated into the work meet specification. IDOT's Bureau of Materials is used as a resource for determining reasonable inspection procedures and sampling frequencies for materials used in highway construction. This guide seeks to establish materials sampling and testing uniformity throughout the state by providing sampling schedules which list the minimum frequencies at which samples and measurements shall be taken by project, plant, and IDOT's district personnel.
This guide applies to all projects constructed on the state system and all local agency improvement projects with federal, state, or MFT funds. Specific exceptions to this Manual for Local Agency work are indicated in the current Local Roads and Streets Manual(s) or by circular letter.
Navigate to Erosion and Sediment Control for more information in regards to methods to prevent soil and other pollutants from leaving the construction site.
Navigate to Storm Water Management Plan to view more information in regards to storm water runoff pollution and an action plan.
Navigate to the Roadside Maintenance webpage to view detailed information about invasive species and prairie inventories along side our roadways.
IDOT’s Bureau of Design and Environment (BDE) issues the BDE Special Provisions four times a year. They are inserted into contracts as they apply. Please navigate to the BDE Special Provisions webpage for a listing of these materials.
The Coded Pay Items are updated seven times each year. Each updated codebook corresponds with a regularly scheduled IDOT Letting. If a Special Letting is held, the most recent update prior to the Special Letting should be used.
Please navigate to Consultant Resources to view Coded Pay Items.
Placement of thermoplastic, epoxy, and polyurea pavement markings shall only be performed by contractors approved by IDOT's Engineer of Operations. IDOT maintains a list of contractors who are currently approved to perform this work.
The following is a listing of pay item unit of measure to material code unit conversion factors in pay item order.
To view all qualified products lists click here.
Work zone safety is of the utmost importance. IDOT policy provides the direction necessary to provide a safe work zone while maintaining mobility.
The following is a list of construction forms.
The following are the reference materials for executing a contract for bridge and structural work.
Listed below are compliance materials by specific scope of service, please click to expand the items below.
For your convenience a contact directory has been provided for questions regarding bridges and structures.
The following are the reference materials for executing an agreement for airport related work