9:02am Update: All lanes of southbound I-270 prior to Watkins Mill Rd have reopened. Expect residual delays.

A significant traffic incident occurred on southbound Interstate 270 between Watkins Mill Road and Montgomery Village Avenue early this morning. At approximately 6:57am, Pete Piringer, the Chief spokesperson for the Montgomery County Fire and Rescue Service (MCFRS), reported a collision involving five vehicles.


The Montgomery County Council voted to approve the Montgomery Planning’s 2025 Update to the Master Plan of Highways and Transitways on July 29, 2025. The update was required due to County Council’s approval of two bills in 2022 (Bill 24-22 and 34-22) that revised the street types identified in Chapter 49 of the County Code, also known as the “Road Code,” to conform to the county’s Complete Streets Design Guide.

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11:05am Update: All lanes of northbound I-270 at MD-109 (Old Hundred Rd) have reopened. Expect residual delays.

Motorists are advised to seek alternate routes following a severe traffic incident that has closed all lanes of northbound I-270 near MD-109 (Old Hundred Road). According to Alert Montgomery at 7:07am Wednesday morning, the incident is expected to cause significant delays in the area.


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