Nightly lane reductions, ramp closures set for I-405 near Lynnwood

I-405 will experience significant traffic disruptions starting Tuesday night, with lane reductions and ramp closures scheduled for three nights between Lynnwood and Bothell. From 8 p. m. to 5 a. m.

, southbound traffic will be limited to one lane from the I-5 interchange to near Damson Road, while northbound I-5 ramps to I-405 will be detoured. The express toll lanes will remain free during these hours to help alleviate congestion. Crews will replace bridge headers and apply new striping with raised pavement markings to enhance future safety. Northbound travelers may face additional closures near Highway 527, with expected detours using NE 195th Street. Work zones will feature reduced speed limits to protect workers, and significant delays are anticipated.

The construction schedule is contingent on weather conditions, meaning it could be adjusted as necessary. Drivers are encouraged to plan ahead and allow for extra travel time during this period of infrastructure improvement.