UPDATE | 5:30 p.m. Traffic on Highway 101 northbound was backed up from Main Street in Templeton to Traffic Way in Atascadero about 5 p.m., but traffic was flowing again on both highway lanes by 5:11 p.m., according to a CHP report.
Original story: Northbound traffic on Highway 101 is backed up from Main Street to Vineyard Drive in Templeton as a result of a single-vehicle rollover.
At 3:38 p.m., a large box truck rolled over and blocked the northbound lanes of the highway. Traffic is moving slowly around the wreck but is expected to continue to back up with the evening commute, said Officer Bill Irons.
A tow truck is at the scene and is trying to clear the wreckage. Traffic in the southbound lanes is flowing smoothly.