Sign up for our newsletter X Subsurface Constructors More SERVICES RESOURCES CASE STUDIES ABOUT CONTACT FULL SERVICE GEOTECHNICAL CONTRACTORS For more than 110 years, Subsurface Constructors has been a Midwest leader in deep foundation construction. Today, we’re also recognized as one of the most experienced and reliable ground improvement contractors in the U.S. From offices in St. Louis and Boston, we bring innovative, value-added approaches to engineers and contractors nationwide — with the expertise and equipment to deliver any geotechnical project. Ground Improvement learn more Aggregate Piers / Vibro Stone Columns Rigid Inclusions / Vibro Concrete Columns Vibrocompaction Wick Drains Deep Foundations learn more Drilled Shafts Augercast Pile Micropile Driven Pile Earth Retention learn more Our team has the experience to design and build safe, reliable and low-cost earth retention walls for the biggest jobs. With tight quality control and rapid excavations, we mitigate your risk and put your project ahead of schedule. Our services also include: Geotechnical Engineering Foundation Load Testing Desktop guide to aggregate pier ground improvement Learn about your options, your costs and bidding out your foundation construction project. download Why Subsurface? Combining a rare offering of ground improvement and deep foundation services with unmatched responsiveness, reliability and value-added solutions, Subsurface Constructors is unlike any geotechnical contractor in the industry. Learn more Featured Case Studies | View All Sheboygan Police Station Proctor & Gamble Highway 40 Seismic Retrofit Where We've Worked Project Location Project With Case Study Keyboard shortcuts Map data ©2021 Google, INEGI Terms of Use 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