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Historic Traffic Data

Chicago

Chicago maps are now posted on the CMAP DATA HUB.

North Cook County

North Cook County maps are now posted on the CMAP DATA HUB.

South Cook County

South Cook County maps are now posted on the CMAP DATA HUB.

DuPage County

DuPage County maps are now posted on the CMAP DATA HUB.

Kane County

Kane County maps are now posted on the CMAP DATA HUB.

Kendall County

Kendall County maps are now posted on the CMAP DATA HUB.

Lake County

Lake County maps are now posted on the CMAP DATA HUB.

McHenry County

McHenry County maps are now posted on the CMAP DATA HUB.

Will County

Will County maps are now posted on the CMAP DATA HUB.

Illinois Department of Transportation District 1

IDOT District 1 maps are now posted on the CMAP DATA HUB.

Miscellaneous

  • Cook 1935
  • State of Illinois Highway Maps from 1917 until today
  • Historic GIS shapefiles containing traffic volumes for the years starting in 1996 can be downloaded from IDOT 's T2 Center.
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