Westminster Presbyterian Church Addition

  • Location: Minneapolis, MN
  • Architect: James Dayton Design
  • Client: Westminster Presbyterian Church

Project Highlights

  • Post-tensioned concrete
  • Parking garage
  • New 2-story addition
  • Provisioned for future vertical expansion


This 40,000 square foot project expands the parking and program space of the original 1880’s church, filling the block on 12th Street between Nicollet Mall and Marquette Avenue. The entire addition uses post-tensioned concrete one-way slabs and beams supported on concrete columns and concrete spread footings. The parking portion of the project consists of one and a half stories of church parking for 300 vehicles, below and to either side under the plazas, which were designed to support the weight of up to 4 feet of soil, plantings, and fire truck loadings. The parking structure to the east is designed to allow the addition of a future 3-story office building. To support the parking addition, large portions of the existing structure were underpinned using permeable grouting and soil nails. The program portion is a 2-story above grade addition that accommodates new worship, education, and community space. Extensive remodeling within the original structure replaced the wood floors with composite concrete slabs on steel beams that are supported off existing limestone bearing walls and new steel columns. Design highlights include a circular skylight, monumental stairs, large dichroic glazed windows, curved and varied projecting steel wall panels, and concrete beams large enough to walk through.