This project is a continuation of the SR 522 Stage 1 and Stage 2 improvements. It provides road improvements, including Business Access and Transit (BAT) lanes from the end of Stage 1 and 2 improvements to 83rd Place NE (the new western City limits). Stage 3 of the project is part of the Sound Transit SR 522/NE 145th Bus Rapid Transit (BRT) project that will widen the existing lanes of SR 522 and create BAT lanes in both directions.
Additionally, this project adds a sidewalk on the north side, installs center medians and street lights, and relocates utilities underground.
Construction started in April 2019 and was completed in June 2022.
Transit speed and reliability will be improved with the installation of BAT lanes where none exists. This supports the vision of downtown Bothell as a transit-friendly urban core. Installation of a sidewalk on the north side of the highway allows the neighborhoods to access intersections along SR 522 and cross the regional trail system. This promotes pedestrian and bicycle usage.
The design and right-of-way (ROW) phases of this project were completed in 2018. On March 19th, 2019, the City Council awarded a construction contract to Thomco Construction, Inc., the lowest responsive and responsible bidder.