Civil Construction
Frontier-Kemper offers many services through its broad range of expertise in Civil Construction. We specialize in the construction of tunnels and other underground spaces for any application, and we have special expertise associated with transit and sewer systems. We also have played a significant role in major highway, power plant, dam, and design/build projects.
We have built our reputation for success by delivering successful projects to meet our clients’ challenges with innovative and cost-effective solutions. Our team undertakes every project with the highest level of professionalism, integrity, and safety.
Frontier-Kemper’s Civil Construction experience encompasses the spectrum of transportation infrastructure. We are experienced in tunneling and constructing heavy structures in many environments, from the densely populated urban areas of New York City, Portland, and Los Angeles to the mountainous terrains of Colorado and British Columbia. We have completed more than 200 miles of tunnel work and are still going strong. We have participated in almost every facet of Rapid Transit System development, including the construction of new systems and the rehabilitation and repair of existing systems.
Our strength in tunnel construction, combined with our expertise in heavy civil projects, has made Frontier-Kemper a reliable builder of Rapid Transit Systems, Combined Sewer Overflow (CSO) Systems, and Water Supply Systems in North America.
Highway Tunnels are often large in cross-section and require conventional drill-and-blast excavation methods. Frontier-Kemper led the joint venture project on the Hanging Lake Tunnels on I-70 in Glenwood Canyon in Colorado, the Haiku Approach & Tunnels on Hawaii’s H3, and the Silver Cliff Tunnels on the shore of Lake Superior in Wisconsin. This demanding work requires maintaining traffic flow on alternate routes while construction is taking place.
As our urban population expands, water supply systems need to be expanded, reconstructed, and better maintained. Added restraints for the maintenance of these systems make the challenges even greater. Plus, time is critical when shutdowns are required – a lot of work must be done in a short time, so shift and weekend work is common.
Frontier-Kemper is experienced in performing both new and rehabilitation work as well as maintenance projects. Notable projects include the rehabilitation of the Delaware and New Croton Aqueducts in New York. Frontier-Kemper has received the Concrete Industry Board’s Special Recognition for construction of the NYC Water Tunnel No. 3 Shaft 26B.
Frontier-Kemper has constructed more than 70 tunnels, using mechanical excavation with hard-rock and soft-ground tunnel-boring machines, road headers, shields, and other methods. We are skilled at conventional drill-and-blast excavation as well as the Shotcrete Method (also known as the Sequential Excavation Method or New Austrian Tunneling Method). We have extensive experience with cast-in-place concrete linings, pre-cast concrete segmental linings, steel linings, shotcrete linings, and the installation of steel supports and rock dowels.