A Hancock County woman riding her bike to work was struck and killed Monday afternoon by a truck carrying an oversized load on U.S. 40.

Police had not released the woman’s name by press time Monday, pending notification of her family, but confirmed she was pronounced dead at Indiana University Health Methodist Hospital around 5 p.m.

UPDATE: Bicyclist killed in accident identified by police

Investigators said the woman was riding her bike east on U.S. 40 just east of County Road 250W when she was struck by an eastbound semitrailer carrying a large concrete slab that stretched onto the shoulder of the road.

The driver of the 18-wheeler was unaware he had hit someone; police stopped him about a half mile from the accident near Meridian Road, officials said. The driver, who was unhurt, had not been identified at press time.

The cyclist, who was on her way to work at the time of the accident, was struck in the head by the concrete slab and landed in the roadway, investigators said.

Witnesses called 911 for help, while motorists followed the truck, police said.

The woman was unconscious when first-responders arrived. Hospital workers were unable to revive her, investigators said.

The driver of the semi was taken to the Hancock County Sheriff’s Department for a routine blood test. Investigators do not believe alcohol or drugs were a factor in the accident.