Caltrans District 7 tweeted about 9 p.m. that repairs were underway.
The falling concrete was reported at 5:34 p.m., according to the California Highway Patrol.
Glendale police officers quickly responded, reporting concrete was “actively falling” from a one-foot-by-one-foot hole in the middle of the freeway, according to the CHP log. It appeared to grow to two-feet-by-two-feet by 6:10 p.m.
Caltrans workers responded to a sinkhole on the 5 Freeway in Glendale that sent chunks of falling debris onto the street below.
The CHP issued a SigAlert at 6:08 p.m. shutting down all southbound freeway lanes, and Glendale police shut down eastbound and westbound lanes of Western between Flower and Lake streets.
The Western Avenue on-ramp to the southbound Golden State Freeway was reopened at 7:30 p.m. and the HOV and fast lane were reopened at 7:49 p.m. The Western off-ramp and lanes 2, 3 and 4 remained closed.
There was no immediate word of vehicle damage or injuries as a result of the falling debris.