East Lake Sammamish Parkway Project Begins Next Month

SAMMAMISH, WA — Construction work to modify a roundabout on East Lake Sammamish Parkway is on schedule to begin in June, and city officials estimate the project will take roughly two months to complete.

Starting June 13, work will get underway at the Southeast 43rd Way roundabout, with most of it taking place between 7 a.m. and 6 p.m. on weekdays. During that time, drivers can expect occasional lane closures and minor traffic delays. Officials expect three full weekend closures will be necessary over the course of the project, with the first expected the weekend of June 24.

The weekend closures will allow crews to finish elements of the project that cannot be completed without blocking the roadway and will happen during the daytime and nighttime hours. During work hours, neighbors should plan for increased engine and machinery noise in the area, along with flashing lights.

The work should wrap up by August, but the city cautioned that national shortages for some components, including radar speed signs, could present slight delays for the timeline.

Here are the improvements slated for the SE 43rd Way roundabout:

• New curb alignments and lane configurations - to reduce traffic speeds through the roundabout.
• Paved approach islands – to reduce maintenance efforts and damage occurring within these islands.
• Permanent removal of the southbound bypass lane on East Lake Sammamish Parkway and conversion to landscaping – to reduce vehicle merging conflicts.
• Rectangular Rapid Flashing Beacons (RFFBs) installed at each crosswalk – to improve pedestrian visibility and awareness.
• Radar Speed Signs - to reinforce the recommended 15-mph speed through the roundabout.
• New pavement and striping.