Rosa I. Arechiga, 21, of Emmett, was headed south on Idaho 16 at about 1:10 a.m. Sunday when the 1996 Toyota Camry she was driving crossed the center line and struck the guardrail on the other side of the road.
The Camry came to a stop partly in the lane and was struck by a northbound 2004 Chevrolet Astro Van driven by Darlene G. O’Neal, 53, of Emmett.
Arechiga and O’Neal were taken by ambulance for treatment at Walter Knox Memorial Hospital in Emmett.
The crash remains under investigation by the Idaho State Police, which said alcohol was involved.
Arechiga was convicted in 2011 for underage consumption of alcohol in a juvenile court case from Gem County, according to online state court records.
Both lanes of Highway 16 were blocked for about an hour as crews worked to remove the wreckage.