Caltrans District 7 tweeted about 9 p.m. Saturday that repairs were underway.
[Ads /]
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.
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 small sinkhole was repaired shortly after midnight and the freeway was reopened.
[Ads /]
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.
City News Service contributed to this report.