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Circular Letters
The Bureau of Local Roads and Streets (BLRS) issues Circular Letters (CL) to: (1) Update or Issue BLRS Pamphlets, Booklets, Special Provisions, and/or Forms; (2) Provide advisory or general information issued by the Federal Government, other bureaus within IDOT, other state agencies, or other groups/organizations.
IDOT has categorized all of the Circular Letters (CLs) issued, since the last manual revision in 1989, into two categories:
- Informational: These letters provide advisories to local agencies. Electronic copies of these letters area available on the Informational tab below.
- Obsolete: The requirements in these letters no longer apply. Obsolete letters will not be available electronically. Please contact your district BLRS office for hard copies of these letters.