A Harrah's shuttle bus carrying 18 passengers slammed into a concrete rail on US 50 Tuesday that may have been mechanical error.

It happened around 9:30 am when troopers from the Nevada Highway Patrol were dispatched to an accident on US Highway 50 near mile marker Douglas 13 involving a Harrah’s shuttle bus transporting 18 passengers.

This section of US 50 in Douglas County is a four-lane highway with east and west bound travel lanes separated by a concrete “K” rail and the posted speed limit is 50 miles per hour.

The information investigated so far indicates 57-year-old Cynthia Hendrickson was driving the shuttle bus and was heading eastbound on US 50. Preliminary information indicates that the drive shaft of the 2000 Ford E450 broke which caused difficulty for the driver to maintain control of the vehicle.

The bus rotated counter-clockwise and struck the concrete “K” rail with its left front. One of the passengers had unspecified claimed injuries and was transported to the Carson Tahoe Hospital by ground ambulance.

Harrah’s dispatched another shuttle bus for the remaining passengers and transported them to the airport.