Finalist in Bentley Systems BE Inspired 2012
Innovations in Rail and Transit Category
Bentley BE Inspired Certificate
Selected Illinois Department of Transportation's
2011 Engineering Firm of the Year
Quigg Engineering, Inc.
Lori L. Quigg, P.E., President and CEO
People on the Move - Read the Article
The Illinois Tollway Driving the Future
People on the Move

Professional Publications and Speaking Engagements

who we are

Quigg Engineering Inc. is a full-service Transportation Engineering Consulting Firm that works across the entire state of Illinois. We are headquartered in Springfield, Illinois, with Illinois branch offices in East Peoria, Jacksonville, and Bolingbrook as well as offices in Davenport, IA and Lakeland, FL.

services we offer

We work together with the client
Using prior experience and common sense to provide quality services; emphasizing technical details, accuracy, and professionalism.

news & projects

Visit the Quigg Engineering Projects Page to view recent project news across our various specializations.

Our projects page has an extensive gallery of photos from various in-progress and completed projects...

QEI employees

Our employee page has contact information for our various engineers and other professionals.