Seattle City Council has granted conceptual approval for a below-grade pedestrian tunnel under Boren Avenue North, north of Denny Way, as part of the construction of a new 40-story residential tower at 121 Boren Avenue North. The tunnel will connect the new development with an existing Onni-owned building across the street. The purpose of the tunnel is to facilitate pedestrian movement between the buildings and allow for the efficient transport of equipment and staff. The project aims to reduce vehicular trips between the sites, minimize conflicts with street-level pedestrians, and provide an additional accessible route for individuals with mobility concerns. The City Council's approval is a preliminary step before final permitting, with additional engineering and utility reviews required before construction can begin.
This project enhances urban connectivity by reducing pedestrian and vehicular conflicts at street level, supporting accessibility, and promoting efficient movement within Onni's multi-building development in South Lake Union. The approval sets the stage for further regulatory steps to ensure safe and sustainable implementation.