Damaged overhead wires. Photo by Metro.

Here is the explanation from Metro for tonight’s disruption to Blue Line and Expo Line service in downtown Los Angeles:

At 4:54 pm, the Overhead Catenary System (OCS) on the Blue and Expo lines just south of downtown was damaged. Currently, the lines are hanging low and there is no rail service on the Blue Line from 7th/Metro to Grand and on the Expo Line from 7th/Metro to 23rd Street. It is believed that the pantograph from a passing train damaged the OCS.

Work is ongoing to repair the OCS and it may take until the morning hours of Monday to complete the job.

The best way to get up-to-the-minute updates is the service alerts tab on the right side of metro.net’s home page or Metro’s Twitter feed.