CBBEL was part of the CH2MHill Project Team to prepare a Tier One and Tier Two Environmental Impact Statement (EIS) and supporting engineering studies for the extension of the Elgin O’Hare Expressway from I-290 to O’Hare Airport and a West Bypass of O’Hare Airport from I-90 on the north to I-294 on the south.


The Details


Cook & DuPage Counties, Illinois

Construction Cost/Fee

$3.6 billion / $7.7 million


Illinois Department of Transportation