Site work and paving for a mixed-use development in Shoreline, Washington. Working plans call for site work for a sidewalk / parking lot; for paving for a sidewalk / parking lot; road / highway; road / highway; bridge / tunnel; and bridge / tunnel.

This project addresses improvements to the sr 523 (n/ne 145th street) & interstate 5 interchange. The two signalized intersections on the west (145th street / I-5 on-off ramps) and east (145th street / 5th avenue) sides of the overpass will be replaced with multi-lane roundabouts. Roundabouts will eliminate the need for a center lane with left-turn pockets on the existing bridge deck and will allow reconfiguration of the bridge Deck from a 5- lane to a 4-lane roadway. The space no longer required for the roadway will be repurposed as a shared pedestrian and bicycle Path across the north side of the bridge, protected by raised curbs. The existing pedestrian walkway on the south side of the bridge will be Retained. Length : 0.000 County : King Agency : Shoreline Begin Termini : N/A End Termini : N/A As of July 22, 2024, the project is in Final Planning status. Anticipated letting year is 2024. WADOT - SR 523 (N/NE 145th Street) & I-5 Interchange Improvements *Project information has been obtained through a public state transportation improvement plan (STIP). A STIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the STIP often evolves based on funding availability. The project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.