Update at 7:50 p.m. — All lane closures except one northbound lane on Glebe Road have been lifted.
Both directions of Glebe Road have been shut down and one lane of westbound Route 50 has been blocked due to chunks of concrete falling off the overpass.
ARLnow.com is hearing that officials were notified earlier this week that debris fell off the bridge and struck a vehicle on Sunday. No one was hurt, we hear. No word on what action, if any, was taken after that incident.