Stonebridge Lofts: Where Urban Luxury Meets Smart Engineering

Project Overview

BKBM provided structural and civil engineering services for Stonebridge Lofts, a 12-story luxury condominium complex located in the historic Mill District of downtown Minneapolis. The project was designed to offer high-end amenities, stunning city views, and sustainable site performance in an iconic urban setting.

Project Highlights

  • High-Rise Luxury Living:
    • 12-story condominium building with scenic overlooks of downtown Minneapolis and Gold Medal Park.
    • Features three levels of underground parking and a spacious exterior terrace on the second level.
  • Complex Structural Coordination:
    • Structural system includes post-tensioned concrete slabs, with extensive coordination for numerous mechanical and architectural openings—including fan coils, skylights, and a large (26’ x 50’) recessed pool on the terrace.
    • BKBM delivered early permit and bid packages to accelerate construction start, saving valuable schedule time.
    • Multiple foundation design options provided flexibility to meet contractor and bidder requirements.
  • Integrated Civil Engineering:
    • Site grading, access driveway development, and park area integration enhance resident experience and site function.
    • New sewer and water services brought from the street to optimize site utilities.
  • Innovative Stormwater Management:
    • Designed green roof areas with rooftop ponding to control stormwater runoff.
    • Included a 60-inch diameter underground infiltration tank for stormwater volume reduction and rate control.
    • Creative stormwater management strategy achieved net zero site runoff for a 1-1/4 inch storm event.

Engineering Solutions

BKBM’s structural and civil teams collaborated closely with the architect, developer, and mechanical engineer to deliver a highly coordinated, efficient design. The team’s approach addressed complex post-tensioned floor penetrations, accelerated permitting, multiple foundation options, and sustainable water management.

Results & Impact

Stonebridge Lofts stands as a model for luxury, sustainability, and thoughtful engineering in urban multi-family development. BKBM’s integrated solutions ensured a high-performance, resilient building with premier living spaces and best-in-class site stewardship in the heart of Minneapolis.