Corrigan Company Mechanical Contractors Employee Directory
ConstructionMissouri, United States51-200 Employees
Corrigan Company Mechanical Contractors is a mid-sized mechanical contracting firm based in St. Louis, Missouri. Founded in 1896 by John F. Corrigan to address indoor plumbing, the company now handles highly complex mechanical projects for industrial, institutional, commercial, nuclear, power, and wastewater-treatment clients across the United States. It combines skilled craftspeople with construction management to pursue value and efficiency throughout projects. The firm has formalized its approach with the Corrigan Success Model, a process intended to add value at each step and optimize project costs. It operates what is described as the St. Louis area’s largest pipe fabrication operation, a capability aimed at improving efficiency, workmanship, and on-site cost reduction through prefabrication. Corrigan holds ISO 9001 certification and emphasizes involvement in early planning to maximize project value. In March 2025, Corrigan signed a new client, Ameren Missouri, indicating ongoing work with utility-scale projects.
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