This website requires certain cookies to work and uses other cookies to help you have the best experience. By visiting this website, certain cookies have already been set, which you may delete and block. By closing this message or continuing to use our site, you agree to the use of cookies. Visit our updated privacy and cookie policy to learn more.
This Website Uses Cookies By closing this message or continuing to use our site, you agree to our cookie policy. Learn MoreThis website requires certain cookies to work and uses other cookies to help you have the best experience. By visiting this website, certain cookies have already been set, which you may delete and block. By closing this message or continuing to use our site, you agree to the use of cookies. Visit our updated privacy and cookie policy to learn more.
Douglas Roy, PE, is the district office manager and associate principal for GZA GeoEnvironmental Inc. For more information about GZA GeoEnvironmental, visit www.gza.com.
In an ambitious undertaking of civil and railway engineering, the Chicago Transit Authority (CTA) in 2006 embarked on a subway tunnel project to allow access between Midway and O’Hare International airports. ...
