History Mission & Values Company News Mission Chastain & Associates is committed to creating and maintaining long-lasting client and employee relationships, and is dedicated to providing excellent service utilizing technologically advanced, creative, and economically-minded principles in a t...

Transportation I-74 Improvement Peoria IL 40 over Rock River Toll Plaza 17 & 19 Rail Siding Improvements I-94 Bishop Ford Expy Structural I-355 South Extension Richmond Avenue Bridge Wheeler Road Illinois 108 Construction Solidarity Drive DuPage Maintenance I-88 Reconstruction I-90 & IL 173 ...

Chastain and Associates is a professional Civil Engineering firm providing Civil and Structural Engineering; Construction Observation; and Hydrographic, Topographic, and Land Surveying Services. Throughout Chastain's more than 60 year history, we respond to the challenges presented to us by our clie...