A bicyclist was seriously hurt Wednesday when she was hit by a pickup truck on High Street in Kennebunk, police said.

The crash occurred shortly after 2 p.m. Wednesday, police said, and Katherine Moxham, 46, of Kennebunk, suffered serious injuries. She was listed in critical condition Thursday morning at Maine Medical Center.

According to Kennebunk police, Moxham was riding her bicycle east on High Street, when she was hit by an oncoming pickup truck. Police said the pickup, driven by a teenager from Kennebunk, crossed the center line, hit Moxham and then ran off the road into a culvert.

Police said that because the driver is younger than 18, he is not being identified, but he is a licensed driver. The driver was taken to Southern Maine Health Care in Biddeford with injuries that police described as minor.

High Street was closed Wednesday for more than three hours between Cat Mousam Road and Harrisecket Road, police said.

The Maine Warden Service sent a specialist in accident reconstruction to help police with their investigation, which is continuing.