Colorado Department of Transportation workers Paul Guajardo, at right, and Mark Petersen directs traffic at a roadblock on Monday, March 3, near the
Colorado Department of Transportation workers Paul Guajardo, at right, and Mark Petersen directs traffic at a roadblock on Monday, March 3, near the intersection of St. Vrain Road and U.S. Highway 36, also known as the Foothills Highway, in Boulder County. The highway was closed due to a fatal car accident. (Jeremy Papasso / Daily Camera)

A 19-year-old Boulder man has been ticketed on suspicion of careless driving resulting in death and careless driving resulting in injury in a March 3 wreck that left a New York woman dead.

Colorado State Patrol Trooper Nate Reid said Alexander Reed, 19, of Boulder was ticketed after he was airlifted to Denver Health Medical Center for treatment of his injuries. State Patrol initially reported Reed was taken to Medical Center of the Rockies in Loveland.

According to investigators, Reed was driving a Subaru Forester south on the 10000 block of Foothills Highway at about 4 p.m. when he drifted into the northbound lanes. Beth Rosenfeld, 55, of Longmont was driving a Toyota Prius north on the highway and steered left to try to avoid the Subaru, but the cars collided head on.

A passenger in the Prius — Helen Tartar, 62, of Bronxville, New York — was pronounced dead at the scene. An ambulance took Rosenfeld to Boulder Community Hospital for treatment.

Reid said neither alcohol nor drugs are suspected as factors in the wreck. He does not know if distracted driving was a factor.

"It will probably be a while before we know all of that information, if we get it at all," Reid said.

Contact Times-Call staff writer Pierrette J. Shields at 303-684-5273 or pshields@times-call.com