Four people were seriously injured in a crash shortly before 7:45 a.m. Wednesday, Oct. 12, on U.S. Highway 10, east of the exit to Waupaca’s bypass.

According to the Waupaca County Sheriff’s Department, Amy L. Ferge, 27, Waupaca was driving a minivan eastbound on U.S. Highway 10 when she struck a semi-trailer truck pulling out of Alliance Industries, located at the intersection of U.S. 10 and Vaughan Road.

The truck was driven by Bonita M. Woodliff, 47, Redgranite. She was attempting to cross the eastbound lanes in order to turn west onto U.S. 10.

A dense fog covered the area at the time the collision occurred.

Ferge was trapped and had to be extricated by Weyauwega firefighters.

She and her two children, Connor Christian, 8, and Karli Christian, 9, were transported by ambulance to Riverside Medical Center. Ferge was later flown by helicopter to Theda Clark Medical Center in Neenah where her injuries were last reported as non-life threatening, according to the Waupaca County Sheriff’s Dept.

Woodliff was taken by ambulance to New London Family Medical Center.

A third vehicle traveling eastbound on U.S. 10 swerved off the road to avoid the initial crash and hit a camper. The driver of the third vehicle, Brandon A. Hoerth, 33, Chilton, had no reported injuries.

Firefighters also needed to clean up diesel fuel that leaked from the semi’s fuel tank.