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The crash happened before 2:30 p.m. on I-85 northbound near NC 86 at mile marker 164.
State troopers said a red 2005 Saturn Vue going too fast for the curve left the road to the right and collided with several trees.
Both the driver and the passenger were killed.
Troopers said Wednesday evening that the victims were identified as Corena M. Johnson, 19, of Mebane and Kelleigh E. Shropshire, 19, of Haw River.
Troopers said Johnson was wearing a seat belt and Shropshire was not. They were pronounced dead at the scene.
The crash caused the right lane to close but it reopened around 5:30 p.m.
Troopers cited speed as the main cause of the incident.
A GoFundMe has been started to help Johnson's family with expenses. Click here for more.