Seattle Public Schools



Asa Mercer International Middle School Replacement Project

Asa Mercer International Middle School will be replaced with a new school building on the same campus.

The school has relocated to the Van Asselt School interim site — 7201 Beacon Ave. S — for the 2023-2024 and the 2024-25 school year.


construction phase graphic showing that the school is in the Construction phase
Learn what happens during these phases
  • Pre-design phase
  • Schematic design phase
  • Design development phase
  • Construction documents/permitting phase
  • Construction phase in progress
  • School opens Fall 2025

Project Progress

Live Video of Project


an expanse of concrete leads to two partially demolished buildings - one on each side - each has an excavator doing demolition
View of the demolition from the old parking lot – August 2023
a partially demolished building that is part brick. the brick part remains
Demolition of the east wing of the old building – August 2023
a partially demolished building. the remaining part of the building is two stories with a series of arched roofs
Demolition of the west wing of the old school – August 2023
a construction site with construction equipment and trees
Demolition of former school building now complete – Sept. 2023
an excavator digging a hole
Installing deep stormwater and sanitary sewer – Sept. 2023
a large expanse of soil with construction vehicles. there are evergreen trees in the background.
Looking south – Oct. 2023
a tall metal structure is attached to the back of a truck with part of it in the ground. two workers are next to it.
Drilling geothermal wells – Oct. 2023
a large construction machine is on a field of soil that has large round holes in it
Drilling aggregate piers – Oct. 2023
a trench with large pipes in it
Underground plumbing – Nov. 2023
a trench with multiple lines of electrical conduit in it
Underground electrical new future boiler room – Nov. 2023

Construction Update

Project updates are posted for the previous month.

Major activity in January 2024

  • Continued drilling geothermal wells.
  • Continued under-slab utilities work.
  • Poured concrete footings and stem walls for the area that will house music and the gym.
  • Began preparation for concrete footings and slab for the commons and classroom wing.
  • Continued applying below-grade waterproofing.

Major activity expected in February 2024

  • Continue drilling geothermal wells.
  • Continue under-slab utilities work.
  • Continue pouring concrete foundation footings and slabs.
  • Continue waterproofing.

Read the Neighborhood Update from the project team.

Current Designs

drawing of a large building on a hill with a ramp and stairs
Design view of looking toward the entry from corner of S. Columbian Way and 16th Ave. S
drawing of a group learning space between two classrooms
Learning commons between classrooms

This site plan shows the planned layout for the campus and new school building. North is to the left of the image. At the bottom is the west boundary at 16th Avenue S.

a drawing showing a school site with a building, parking, and green spaces

Community Participation

School Design Advisory Team

Early in the design process, representatives from the school community come together to form a school’s SDAT. SDATs typically include school and district staff, parents, and community members. Students are sometimes included for all or part of the process. The project construction managers also take part. Learn more about Mercer International Middle School SDAT.

About the Project

The existing Asa Mercer Middle School building will be demolished and a new mass timber multi-story middle school building of approximately 174,000 sq. ft. constructed. Once complete, the new school building will provide permanent space for 1,000 students in grades 6–8.

The new one- to three-story school will be surrounded by landscaping and outdoor learning spaces. A synthetic turf practice field is planned for the east side of campus. A new, secure entry will welcome students, families, and the community with a clearly defined “front door” to the school.

Classrooms will be organized by academic neighborhoods, with flexible support spaces to promote a sense of community and support academic success for all students.

Sustainable design features are built in to meet district goals for clean energy and renewable resources.

Interim Location: During construction, Mercer International Middle School will be located at the Van Asselt School Interim Site, 7201 Beacon Ave. S. An addition is being constructed at that location to convert it to a site large enough for temporary use by middle schools. 

Construction Project Management Shiels Obletz Johnsen, Inc. (SOJ)

SOJ Construction Manager: Justine Kim,, 206-838-3706

School Design: Bassetti Architects

General Contractor/Construction Manager: Cornerstone General Contractors

Funding Source: Funded by the Building Excellence V (BEX V) Capital Levy, approved by Seattle voters in 2019.

Budget: $152.5M

Asa Mercer International Middle School
1600 S Columbian Way
Seattle, WA 98108

School Profile

School Website