Sixteen-year-old Teressa Rosalind French, was killed after she was hit by a speeding car, driven by a teen, police said.
The other victim, a 13-year-old girl from Gaithersburg, is in critical condition at a hospital after the crash, police said.
The crash happened in the 7400 block of Muncaster Mill Road, when two cars traveling northbound crashed then spun out of control, police said.
"The preliminary investigation indicates that a blue 1996 Honda Accord and a blue 2004 Chrysler Sebring were both northbound on Muncaster Mill Road. The Honda was in lane one and the Chrysler was in lane two. As the two lanes began to merge, the vehicles collided. The Honda struck a utility pole and the Chrysler left the roadway, struck two pedestrians that were on the sidewalk, and then struck a tree," police said in a news release.
Police say that speed was a factor and that the teens in the cars, who only suffered minor injuries, have not been charged.