Final Update 7:00 pm: State Route 18 is finally clear and open.
Update 3:45 pm: State Route 18 is still closed. The Washington State Patrol reports the clean-up has been a VERY difficult one.
On September 3rd at 7:08 am, the Washington State Department of Transportation (WSDOT) reported a semi rollover on State Route 18 at Tiger Mountain State Forest is blocking all lanes. The incident has been an ongoing issue since just after midnight.
The SR 18/Tiger Mountain exit on westbound I-90 is also closed. Travelers going eastbound on SR 18 must exit at Issaquah-Hobart Road Southeast.
Emergency crews are on the scene. No major injuries to report.
Travelers should prepare for delays and avoid the area if possible. There is a one-mile back-up on SR 18 eastbound at Tiger Mountain State Forest.