Subsurface Constructors More SERVICES RESOURCES CASE STUDIES ABOUT CONTACT DRILLED SHAFTS Subsurface Constructors built its reputation with drilled foundations in the Midwest but has expanded into a complete foundation engineering and construction corporation. Our experience in drilled foundation construction, continual investment in technology and culture of process improvement have made Subsurface Constructors the region’s recognized leader in the industry. Subsurface has a large fleet of foundation drilling equipment, ranging from drill rigs specially suited for tight areas with limited overhead space to high-torque drill rigs capable of excavating competent rock at high production rates. The variety of machinery we own gives us the confidence and ability to offer the most practical and cost-effective means for installing drilled foundations on any project. Some of our drilled pier capabilities include: Drilling depths up to 160 feet Drilling diameters up to 12 feet High production rock excavation Low-overhead restrictions / tight rig access Slurry Drilling Load Testing / Osterberg Cells Contact us today for expert guidance on drilled shafts and deep foundations. get started Get a Complete Analysis of Aggregate Pier Applicability to your Ground Improvement Project Contact Subsurface Constructors today for a prompt and thorough analysis with experienced aggregate pier engineers, and get your project on the fast-track to completion. SERVING THE CONSTRUCTION INDUSTRY FOR MORE THAN 110 YEARS ADSC AGC ASCE DFI COPYRIGHT © 2021. ALL RIGHTS RESERVED. PRIVACY POLICY. ST. LOUIS: 866-421-2460 PHILADELPHIA: 609-577-2724 CLEVELAND: 866-421-2460 MINNEAPOLIS: 612-280-8940 Facebook LinkedIn Youtube Newsletter Signup