Wide view of CNC Foundations team installing a micropile foundation system at a McDonald’s location, demonstrating precision construction in deep fill environments.
PreviousNext
1234
CNC Foundations crew installing a micropile foundation system outside a McDonald’s drive-thru, addressing deep fill soil conditions with specialized drilling equipment.
Interior view of CNC Foundations team operating micropile drilling equipment inside a McDonald’s under renovation, stabilizing the structure in deep fill conditions.
Close-up of micropile drilling rig in action at a McDonald’s site, showcasing CNC Foundations’ expertise in ground improvement and deep fill remediation.

MICROPILE FOUNDATION SYSTEM FOR MCDONALD’S CONSTRUCTION IN DEEP FILL CONDITIONS

  • High Ridge, Missouri

CNC Foundations (CNC) delivered a high-performance micropile system for underpinning work at an existing McDonald’s in High Ridge, Missouri. With nearly 40 feet of uncontrolled fill and highly variable subsurface conditions, the site required a deep foundation solution capable of bypassing weak soils and anchoring into competent bearing layers.

CNC’s micropile installation provided a low-vibration, low-disruption alternative to traditional deep foundations, ideal for a constrained, high-traffic commercial corridor. The tailored design ensured long-term structural performance while maintaining a clean and efficient worksite.

Project Details

  • Owner: McDonald’s USA LLC
  • General Contractor: Ostmann General Contracting
  • Structural Engineer: Core States Group
  • Project Timeline: 17 Production Days
  • Design Bearing Capacity: 4,000 psf
  • Service: Micropiles
  • Install Numbers: 40+ micropiles at over 2,200 linear feet
  • Market Sector: Hospitality

The project required a foundation system capable of supporting commercial loads on a site underlain by 37 feet of uncontrolled fill, including fat clays, lean clays, clayey gravels, and gravels. These variable, compressible materials posed significant risks of settlement and instability. CNC Foundations was tasked with implementing a solution that could reliably transfer structural loads through the fill into competent bearing strata—while also minimizing vibration, spoil, and disruption to surrounding infrastructure and ongoing business operations.

Subsurface investigation revealed challenging conditions: Approximately 37 feet of uncontrolled fill, consisting of fat and lean clays, clayey gravel, and gravel. These soil profiles were highly variable and compressible, lacking the strength and consistency needed to support commercial structural loads. As a result, a deep foundation system was required—one capable of bypassing unsuitable soils and transferring loads into deeper, more competent strata to ensure long-term stability and performance.

CNC Foundations installed over 40 reinforced, pressure-grouted micropiles, drilling through deep fill and anchoring into stable bearing strata below. This system provided dependable load transfer, minimized vibration and spoil on a tight commercial site, and allowed installation without excavation or pile driving. All micropiles met geotechnical and structural criteria through load testing, and the project was completed on schedule, ensuring stability and long-term performance for the new McDonald’s facility.