The Baltimore-Washington Parkway shut down in both directions for over an hour early Friday morning from Route 410 to the Beltway after a serious crash that prompted a medevac helicopter response.

Both directions of traffic were stopped from approximately 1:30 a.m. until shortly before 3 a.m., when southbound traffic resumed; northbound lanes reopened shortly after 3:30 a.m.

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The crash happened around 1:30 a.m. Dec. 27 on the Baltimore-Washington Parkway near the Good Luck Road overpass. A vehicle crossed over from southbound to northbound lanes, striking at least two other cars just north of MD-410, U.S. Park police told WTOP. Two people traveling in the same vehicle sustained critical injuries and were airlifted to the hospital.

This is a developing story. Check back with WTOP for updates.

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This story was updated at 3:40 a.m. Dec. 27 with additional information.