Mercer Middle School facade

Mercer Middle School Replacement

Project Details

Size

174,200 SF

Client

Seattle Public Schools

Team

Bassetti Architects
Cornerstone General Contractors

Recognition

2026 WoodWorks, Wood in Architecture Award
2026 Northwest Masonry Institute, Excellence in Masonry Awards, K-12 Education

Mercer Middle School entry
Mercer Middle School library
Mercer Middle School hallway

Organized by academic neighborhoods, classrooms offer flexible spaces to promote a sense of community and support academic success.

Mercer Middle School entry

Extensive use of mass timber contributes to the school's sustainability goal of lowering embodied carbon. A three-story mass timber classroom wing consists of CLT decking, glulam beams, and columns, while a two-story mass timber spine with sloping glulam columns ties three distinct zones together. Light-frame wood in the southern building saved the owner cost during the early value engineering change, and steel framing occurs in the commons and gymnasium. The lateral system comprises of shear walls, steel-braced frames, and moment frames.

Mercer Middle School braced frames
Mercer Middle School commons

Reorienting the school and recreating Beacon Hill's natural topography better situates the school on the site. Ground improvement methods such as aggregate piers minimize the impact of the sloping site.

Mercer Middle School exterior stairs

Photography © Dave Fennema / HMC Architects, Chris Grant / HMC Architects,
Lawrence Anderson

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