A worldwide technology outage is causing disruption to some State of Illinois online systems. We are aware of this issue and are diligently working on restoration.

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Welcome to the new IDOT home page. Our location has changed, please update any bookmarks.

Construction

IDOT and its contractors utilize several manuals and guides to comply with the requirements of the ILR10 and ILR40 NPDES Permits.

Standard Specifications for Road and Bridge Construction
Illinois Construction Manual
Erosion and Sediment Control Filed Guide for Construction

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Illinois Department of
Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764

(217) 782-7820 or
TTY (866) 273-3681

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