The westbound lanes of State Route 18 at Tiger Mountain Summit and both the eastbound and westbound ramps from Interstate 90 to westbound State Route 18 were blocked for about four and a half hours on Wednesday morning after a crash involving a semi truck.
The Washington State Department of Transportation (WSDOT) first reported the crash on social media at 3:55 a.m., saying, “On SR 18 westbound at Tiger Mountain (MP 24) there is a collision blocking the right lane.”
By 5:45 a.m., WSDOT confirmed that the westbound lanes of SR 18 at Tiger Mountain Summit were still blocked, and both the eastbound and westbound lanes of I-90 to westbound SR 18 were also blocked.
At that time, the Incident Response Team and Washington State Patrol were on scene, with a tow truck on the way.
At around 6:30 a.m., WSDOT updated travelers that all lanes of WB SR 18 at Tiger Mountain Summit remained blocked, along with both the EB and WB ramps from I-90 to WB SR 18.
Emergency and tow crews were on scene, but there was no ETA for when the lanes might reopen.
As of 6:45 a.m., there was about two miles of backup on WB SR 18, according to WSDOT.
By 8:20 a.m. all lanes had reopened.
No word yet on the cause of the crash.