Environmental Studies & Permitting
Bridges and Structures
Highways & Roads
Quigg Engineering is having an open house in their Downtown Chicago Office! Details and RSVP info in post.
Open House E-Invite
Quigg Engineering was named 2018 IDOT Engineering Firm of the Year!
We are happy to announce that QEI has won IDOT Firm of the Year 2018! We also won the award in 2011. Thank you and congrats to everyone who made this possible!