Mixed-Use Portland Architecture Development – design by Skylab Architecture. The B76 Building is a wedge shaped 20,000 sq. ft. building featuring a CLT structural system. B76 was designed as a working-class building aimed at public transportation connectivity, pedestrian openness, and bicycle priority access. It is positioned centrally in the new eastside community envisioned by the Burnside Bridgehead Framework plan. The ground floor will be activated by storefronts along third avenue and a work space above. This new building program will also reintegrate a pedestrian stair down from the Burnside Bridge level to third avenue akin to the original stairs that previously existed.