The i-90 in Chicago is one of the main north-south interstate highway routes
through the greater metro Chicago area.
The i-90 travels generally in a north-northwesterly and south-southeasterly
direction across metro Chicago.
Some sections of the i-90 in Chicago are also called/known as the "i-94",
"Chicago Skyway" and the "Kennedy Expressway".
The map below shows the i-90 (highlighted in pink) and it's travel route
through the metro Chicago area ...