A Shawnee woman was injured when she swerved to avoid an animal in the roadway and her vehicle struck a guardrail, troopers reported.

The Oklahoma Highway Patrol said the accident occurred about 9:47 a.m. Sunday on Garrett's Lake Road, just west of Brangus Road, which is about 1.5 miles east of Shawnee in Pottawatomie County.

A 1989 Mercury Grand Marquis driven by Serena Daughterty, 73, was westbound when the accident occurred. The vehicle departed the roadway to the right,, the OHP said, and she overcorrected and swerved to the left. The vehicle struck a guardrail and departed the roadway again, coming to rest in a ditch.

She was transported by personally-owned vehicle to St. Anthony Shawnee Hospital and then by REACT EMS to OU Medical Center, where she was admitted in serious condition for treatment of neck, trunk internal, trunk external, and leg injuries, the OHP said.

Unsafe speed was listed as cause of the collision. The OHP said seat belts were equipped and in use.

The crash was investigated by Trooper Tyson Wright #693 of the Pottawatomie County Detachment of Troop A, and he was assisted by the Shawnee Fire Department and REACT EMS.