Overnight lane reductions and rolling slowdowns on SB I-405 near SR 527 in Bothell, May 21-22, for sign removal

Nighttime rolling slowdowns will affect drivers on southbound I-405 near Bothell from May 21-22 as part of the ongoing I-405/Brickyard to SR 527 Improvement Project. Starting at 10 p. m. on May 21, crews will implement rolling slowdowns until 4 a. m.

on May 22, creating temporary traffic halts for up to 15 minutes to allow for sign bridge removal. Closures will also affect key ramps, including the southbound I-405 to SR 527 and both SR 527 on-ramps. Detours will redirect traffic around the work zones, potentially increasing congestion on southbound I-405. The project aims to enhance safety and widen the roadway, addressing growing traffic demands in the area. Local drivers should prepare for delays and consider alternative routes.

Updates regarding the project will be available on WSDOT’s Travel Center map and mobile app. This construction effort represents a significant investment in regional infrastructure aimed at improving traffic flow.