BOYLE HEIGHTS (CBSLA.com) — A major freeway transition road that runs through Boyle Heights was shut down Monday night after a big rig towing a cement mixer overturned.

Los Angeles fire crews and the California Highway Patrol responded to the crash shortly before 8 p.m.

READ MORE: Fullerton PD Detectives Seeking Public Assistance In Sunday Morning Homicide

The accident completely blocked the roadway, which forced the closure of the southbound 5 Freeway to the eastbound 10 Freeway transition road. Traffic was backed up for miles.

READ MORE: Jonatan Jose Medina-Mejia Arrested By Huntington Beach PD For Series Of Alleged Burglaries

LISTEN TO KNX 1070 FOR LIVE TRAFFIC UPDATES

The driver of the tow truck was not injured.

MORE NEWS: LA County Continues To See COVID-19 Surge

The CHP is investigating the collision.