About Us
STL Underground Contractors, based in the St. Louis, Missouri area, was founded to meet the growing demand for underground infrastructure construction. As new buildings and roadways rise, available space for utility installation continues to shrink—requiring innovative alternatives to traditional methods.
Our team has extensive experience with a wide range of underground construction techniques, including auger boring, microtunneling, large-diameter tunneling, shaft excavation, drill and blast, and more.
We currently operate within an 8 hour radius of Saint Louis, MO.
Safety
Safety is a core value at STL Underground Contractors. The same professionals who manage our projects in the office also work on-site in the field. Project execution planning begins during the bidding phase and is continuously refined and updated throughout field operations to ensure the highest safety and performance standards.
