Traffic Impacts for SE 4th Street Improvement Project

Release Date: July 03, 2018

In order to safely complete deep utility work as part of the SE 4th Street Improvement Project, SE 4th from 218th AVE SE to 225th Ave SE will be closed to the public (Local Access Only will be allowed for residents residing within the closure area) from Monday, July 9 to Saturday, August 18.


The City is currently completing a number of improvements to SE 4th street to create a better user experience for pedestrians, cyclists and vehicles.  Improvements include sidewalks, bike lanes, street lighting, landscaping, roundabouts, and sewer and water main upgrades.



The SE 4th Street Improvement Project is a critical component to support the City's Town Center plan. The project will develop SE 4th St between 218th Ave SE and 228th Ave SE into a multi-modal corridor to meet concurrency requirements and provide increased opportunity for access and development within the core mixed-use area.


The existing road consists of two travel lanes with narrow shoulders and no sidewalk. The proposed road will be developed to include two travel lanes, a center turn lane or median, bike lanes, planter strips and sidewalks. This project will also coordinate the installation of upgraded Sammamish Plateau Water and Sewer District utilities with the roadway construction.


For more information on the SE 4th Street Improvement project, and potential detour routes please visit:

SE 4th Concept Drawing.jpg