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Atlantic Central Bus Base – Expansion

Project Description

The Atlantic / Central Bus Base Expansion – Operations Building was the final phase of the King County Metro’s 22-acre, $100 million master plan. The 2-story building was designed to achieve LEED Gold Certification. The building foundation included driven steel piles with cast-in-place concrete grade beams and post tension concrete slab-on-grade. The building structure design included structural steel elements with concrete slab-on-metal decking and structurally supported aluminum storefront entries. The skin/envelope combines metal-stud framed walls with an air barrier metal panel system and storefront opening.

Architectural elements include a terrace roof, suspended glass flooring, expansive terrazzo floors, stairs and inlays and a green-screen building façade. Interior build-out and finishes include offices, recreational rooms, cafeteria, locker rooms, exercise facility and training/classrooms. The operations building will replace existing facilities, be home for more than 50 full time employees and serve as the dispatch center for 1,200 Metro bus drivers.

Sustainable strategies and the LEED Gold certification make the new Atlantic/Central Operations Building a flagship facility for King County Metro Transit, with a commitment to innovation, sustainability along with environmental stewardship efforts and achievements.

Project Details


Seattle, WA


King County Department of Transportation


Tetra Tech