UPDATE: All Lanes Open on SR 16 After Fatal Collision

UPDATE: Monday, 11:50 a.m.

The Washington State Patrol tweeted the following message:

SR-16 update: All lanes open...State Patrol units have cleared the scene.

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A 44-year-old woman was killed and a Washington State Patrol trooper was struck by a vehicle in a series of crashes Monday morning on icy state Route 16.

The State Patrol closed all lanes of westbound SR16 near Burnham Drive as it investigates.

According to , two engines, a rescue truck and five medic units responded to a collision involving multiple vehicles at 5:20 a.m. Five vehicles and a motorcycle were involved in the crash at the Burnham Drive exit, which was caused when cars started to slide on the ice.

A Washington State Patrol Trooper was hit by another sliding vehicle while investigating an initial collision, involving two cars.

Trooper Guy Gill posted on his Twitter page that the woman was struck by a car and killed when she was out of her vehicle trying to assist with a crash on the highway. It wasn’t immediately clear which crash she was helping with. The WSP is currently investigating the incident and said drivers should prepare for an extended road closure at the location.

Five people were taken to area hospitals for various injuries.

Gill also said the trooper was released from the hospital with knee and shoulder injuries.

"Again...Be prepared for icy road conditions this morning. Slow down and increase your following distance," he wrote on Twitter.

Traffic is being diverted over the Burnham Drive roundabout.

Click here to check for the latest traffic updates on Patch.

We will have more information as it becomes available.