What you need to know for the week of Sept. 13-17

Looking for real-time updates?

• Follow @wsdot_traffic on Twitter, visit the travel alerts page and download the mobile app.
• Check out the mountain pass webpage

King and Snohomish County​

• Beginning at 6 a.m., Mon. Sept. 13 - SR 9 is fully closed for both directions near milepost 37 in Arlington until 6 a.m., Sat. Sept. 18. Signed detours are in place.
• Beginning at 6 a.m., Fri. Sept. 10 - The I-5 Smokey Point rest areas (milepost 207) are closed for needed maintenance until 9 a.m. on Fri., Sept. 24. Rest areas at mileposts 188 and 237 will remain open.
• Chinook and Cayuse passes through Mount Rainier National Park are open to vehicle traffic for the season. 
• Beginning Oct. 1 toll rates in the SR 99 tunnel will increase. The current weekday peak Good To Go! rate of $2.25 will increase to $2.60, and the weekday peak Pay By Mail rate of $4.25 will rise to $4.60. Drivers with a Good To Go! pass will continue to pay the lowest toll rate.

Skagit, Island and Whatcom County

• SR 542 between milepost 46.2 and Artist Point is now open. 
• SR 20 North Cascades Highway is open to vehicle traffic.

The latest in our area from the WSDOT Blog:

• New ramp meter alleviates traffic congestion, improves safety at SR 167 to northbound I-405
• With most paving complete, Revive I-5 shifts to expansion joints