The Montgomery County Police Department (MCPD) is investigating a serious collision that occurred Saturday morning near Spectrum Avenue and N. Frederick Avenue (MD 355) in Gaithersburg.
The collision left one adult with life-threatening injuries and another with non-life-threatening injuries. According to an incident alert issued at 7:56am, Southbound N. Frederick Avenue is closed at Professional Drive, and drivers are advised to expect delays. At approximately 8:45am, the final vehicle was towed off of the scene and traffic was once again flowing.
MCPD is investigating a serious collision near Spectrum Ave & N Frederick Ave. Call received at 7:13 a.m.
Preliminarily, one adult transported with life-threatening injuries, another with non-life-threatening injuries.
All vehicles remained on scene. #MCPNews #MCPD pic.twitter.com/GOXxoMrfTT
— Montgomery County Department of Police (@mcpnews) August 9, 2025