7:30PM Update: All lanes have now reopened. Expect residual delays.
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Frederick Rd/355 is currently shut down in both directions at Shakespeare Boulevard in Germantown due to a collision involving a rollover and entrapment.
Montgomery County Fire and Rescue and MCPD are currently on the scene.
The incident occurred around 6pm on Saturday evening, according to MCFRS Chief Spokesperson Pete Piringer.
Drivers are advised to seek alternate routes and expect significant delays.
We will provide an update when more information becomes available.

Photo courtesy of @mary.nicollee on Instagram.
Traffic incident closes Southbound Frederick Rd. (MD-355) at Shakespeare Blvd. Expect significant delays. Seek alternate route. #MDTRAFFIC
— Montgomery Co. MD OEMHS (@ReadyMontgomery) April 9, 2022
Traffic Advisory / SB Route 355 Frederick Rd. SHUT DOWN & both directions Shakespeare Boulevard at Rt355 CLOSED, collision, some lanes blocked https://t.co/PFXSkiBaYJ
— Pete Piringer (@mcfrsPIO) April 9, 2022