The Fourth is expected to be the busiest weekend of the year for Washington State Ferries. Extra sailings will be added for several routes. Reservations are strongly recommended for the San Juan Islands, Sidney, BC or Port Townsend/Coupeville. Travelers can also consult the best times to travel tab on the right of each route’s summer schedule listing.
Allow extra time for Interstate 90 travel
Travel across I-90 from the summit of Snoqualmie Pass to Vantage is going to be particularly tricky this summer – including the holiday – due to a number of projects that will ultimately improve travel for everyone.
The heaviest congestion is westbound near Cle Elum from mileposts 84 to 93, where repaving work means a single-lane detour. You can avoid these backups by using an alternate route via US 97 to SR 10.
Another tough spot is the Vantage Bridge, which is down to a single eastbound lane until the end of summer due to a bridge painting job (painting a bridge extends its life by preventing rust). Work won’t take place during the holiday, but the heavy concrete barriers can’t be easily removed, so the single lane of eastbound traffic will remain. Plan on lots of extra time to get through this area.
Other spots of construction and delays include:
-The Summit of Snoqualmie Pass east near Keechelus Lake (mileposts 54-62)
-Easton area (mileposts 67-70)
-Ellensburg area (mileposts 106-122)