The upcoming Memorial Day weekend (May 25-28) is typically considered the unofficial start of summer. And with it comes increased traffic on our highways and interstate roads.

The Washington State Department of Transportation (WSDOT) urges you to plan ahead if you are doing any traveling during the holiday, and they've come up with this handy checklist to help you avoid headaches:

  • Check the Washington State Department of Transportation's best times to travel charts to help plan your trip and avoid congestion.
  • Get informed about WSDOT's online tools, including the WSDOT mobile app, traffic cameras and email alerts.
  • Visit online traveler informationfor traffic, weather and ferry schedules.
  • Follow WSDOT's social media accounts, such as Twitter and Facebook.
  • Pre-program your vehicle radio to 530 AM and 1610 AM for highway advisory radio alerts.
  • Call 5-1-1 for updated road conditions.
  • Allow extra time for travel during the holidays to avoid rushing or distraction.

Most state highway construction work is suspended through the holiday weekend – including Monday, May 28 – to ease congestion. However, please stay alert for new lane shifts or work zone staging areas that may be remain in place.

Snoqualmie Pass
No lane closures or other construction is planned from Friday, May 25, to Tuesday, May 27, however the usual holiday increase in traffic volumes means travelers should expect delays, especially eastbound on Friday, May 25, and westbound Monday, May 26. Receive text message alerts about significant delays by texting the number 468311 with the words "WSDOT Snoqualmie"

Chinook and Cayuse passes
In the mountains, spring snow and a construction project in Mount Rainier National Park mean Chinook and Cayuse passes will not reopen by the holiday weekend this year. The passes are scheduled to open June 11. Chinook Pass, State Route 410, is closed between Crystal Mountain Boulevard, about 12 miles northwest of the summit, and Morse Creek, five miles east of the summit. SR 123 over Cayuse Pass is closed between Crystal Mountain Boulevard and the Stevens Canyon Road entrance. Both these passes close each winter due to weather and hazardous conditions.