Design-Build Sliplining Approach Saves Time and Money By Konnor Bursaw, PE The Colsman Tunnel runs underneath the community of Centennial, Colorado, a suburb located approximately 15 miles south of Denver.…

Underground tunneling reduces disruptions By Kimberly Paggioli, P.E. and Troy Hartjes, P.E. While rain is often a welcome sight along the western shore of Lake Michigan, some Mequon, Wisconsin, residents…