Planning to head into Seattle this weekend? Be prepared to see some extra cars northbound I-5.

Beginning at 11 p.m. Friday, Feb. 10 westbound I-90 will be down to one lane near Bellevue Way then detoured to the express lanes until 5 a.m. Monday, Feb. 13 Contractor crews working for WSDOT and Sound Transit continue their work to upgrade operations and safety systems in the eastbound Mount Baker and Mercer Island tunnels. Most of the work during these weekends is taking place inside the tunnels and out of the view of drivers.