The semi, carrying bags of powdered milk, swerved to avoid a vehicle that was driving too fast on the wet northbound lanes of Interstate 5, officials said.

Share story

All lanes of southbound Interstate 5 south of Olympia were blocked for about three hours following a four-car collision Wednesday morning. All lanes have since reopened.

A semi-truck carrying bags of powdered milk flipped after swerving to avoid hitting a pickup that was traveling too fast on the wet surface of northbound I-5, according to Washington State Patrol. The driver of the semi lost control and went through the center barrier into the southbound lanes, striking a FedEx truck, Trooper Johnna Batiste said by phone.

The truck flipped and powdered milk bags fell out of the back container, spilling onto the roadway. The accident occurred near Southwest 113th Street in Tumwater, she said.

The driver of the FedEx truck suffered a broken leg, Batiste said.

A tow truck removed the vehicles and some center barriers were replaced, Batiste said. All lanes reopened at around 4:20 p.m.

Batiste first reported the accident in a Twitter post at 8:44 a.m.