Middlesex District Attorney Gerry Leone announced today a Lowell woman has been charged after  December  2009 crash that killed a construction worker and left a second victim seriously injured.

Leone's office said Juanita McKenzie, 34, of Lowell, was charged with motor vehicle homicide, marked lanes violation, breakdown lane violation, and failure to change lanes for an emergency vehicle. 

 An arraignment date has not yet been set, Leone's office said.

According to police, on Dec. 1, 2009, at about 10:30 am, McKenzie was traveling on Route 3 North in Chelmsford in the middle lane when her vehicle allegedly crossed into the first travel lane and continued into the breakdown lane, which had been blocked off due to construction taking place on the highway.

As McKenzie's vehicle entered the breakdown lane, according to police, it allegedly drove over numerous traffic cones before striking the first victim who was standing outside his vehicle in the construction zone. 

McKenzie's vehicle then struck a second victim, pinning him against the her vehicle and the first victim's vehicle. Following the collision, McKenzie's vehicle allegedly spun out across two travel lanes, striking an additional vehicle. Both vehicles stopped against the jersey barriers in the median strip of Route 3.  

The first victim was transported by Life Flight to Beth Israel Hospital with serious injuries and, as a result of the accident, one of his legs had to be amputated.

The second victim, identified as Anderson Cadell, 44, of Seabrook, New Hampshire, was pronounced dead at the scene. The driver of the second vehicle that was struck was not injured and did not seek medical attention.