For over a century, Corrigan Company has built a reputation as a full-service process piping contractor specializing in the delivery of quality results on a fast turnaround. Corrigan handles a wide variety of jobs from two-man retrofits projects to a 300-man, 64-day around-the-clock marathon installation. While many of our jobs are large and tap our extensive resources, we are equally competitive on smaller jobs and welcome the opportunity to handle them. Our customers rely on us for our experience, you know their names…
HOLCIM CEMENT: is the largest cement plant in the world. Corrigan Company fabricated and installed over 20 miles of process piping throughout the Holcim plant. This was a well managed project with a workforce of over 285 men and women. This 2-year project was completed on time and under budget. We are proud to have won the Associated General Contractor’s Keystone Award for Project of the Year 2009 for our effort at Holcim Cement. …VERY PROUD! Since completion of the main plant, we continue to complete jobs for Holcim Cement. We are honored they rely on our expereince and dedication to get their jobs done!
ST. LOUIS 
METROPOLITAN SEWER DISTRICT: has been a long-time customer of ours. We’ve fabricated and installed process piping in all of their wastewater treatment plants. In the 1960’s we helped build Bissell Point and were there again from 1985-1990 for a massive Retro-fit project. We have recently completed two new plants for MSD. Lower Meramec and Coldwater Creek, both featured on our Waste Water Treatment page. Year after year, we continue to build not only our relationship with MSD but also many of their waste water piping systems.
AMEREN UE: is another 
one of our repeat customers. For over the past 75 years, we have had the pleasure of completing numerous projects in all of their Fossil and Nuclear Plants. Turnaround Outages, Critical Steam Systems, Turbine Re-builds, Condenser Tube Replacements, High Pressure Boiler Feed-Water Systems, Underground and Above Ground Piping Systems…we’ve done it all. We have the experience to handle every project, including new ground-breaking ones like the ESW Underground Piping (featured on our Power Piping page). Ameren continues to trust our experience and capabilities to accomplish their most difficult projects. We are very proud of that! No job is too difficult for our team of experts…delivered on-time and under budget.
MORE OF OUR SATISFIED CUSTOMERS…
| Anheuser Busch – InBev | Chrysler – Ford – General Motors – Toyota |
| Center Ethanol & ABENGOA Ethanol | Archer – Daniels – Midland |
| American Cyanamid | Shell Oil |
| Afton Chemical | Proctor & Gamble |
| Granite City Steel – US Steel | Marquette Cement |