Chicago,
Illinois - Corporate Headquarters
123
North Wacker Drive, Suite 300
Chicago, IL 60606
Phone: 312.704.9300
Fax: 312.704.9320
E-mail: ilweb@collinsengr.com
Toll-Free
24-Hour Emergency Response: 877.346.3234
Click
here for more information about services the Illinois office
can provide!
