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Accidents in Chelmsford, Littleton, close highway to Westford for limited time

The truck was carrying hazardous materials, and was the first of two serious accidents on 495

An early Saturday morning accident involving a tractor trailer carrying hazardous materials closed Route 495 southbound in Chelmsford for more than two hours during the rescue response and crash investigation and cleanup, limiting access to Westford during that timeframe.

The accident, which involved a 2012 Toyota Corolla and a tractor trailer, occurred at 3:30 a.m. Saturday morning on Route 495 southbound between Routes 3 and 110. A preliminary report indicated that the motor vehicle struck the rear of the tractor trailer, according to Massachusetts State Police.

An occupant of the Corolla, a 25-year-old Brookfield man, was listed in stable condition late Saturday morning at Lahey Clinic in Burlington.

The truck, which was from Fair Haven, VT, contained dichloromethane, a liquid chemical most often used as a solvent, according to State Police.

State Police are investigating the crash with help from the Mass. Department of Transportation.

UPDATE 9:04 a.m., 3/25/12 — On Sunday morning, a fatal accident on 495 northbound in Littleton has also caused delays to Westford, with the breakdown and right lanes remaining closed for the time being.

The name of the victim has not yet been released, and an investigation of the crash site is being conducted jointly by the Massachusetts State Police Collision Analysis and Reconstruction Section, Crime Scene Services Section and the State Police Detective Unit/Middlesex District Attorney’s Office.

UPDATE: 11:42 a.m., 3/25/12 — The crash occurred at 3:23 a.m., the crash involved two Westford residents: the driver, Dana Kelley, 20, and a passenger, Kurt Boyd, 21.

Kelley was driving on 495 and lost control, striking into a guardrail.

Boyd was not injured, it is unclear if Kelley sustained injuries.

Another passenger, 19 year old Nancy Kheam of Lowell sustained fatal injuries and was pronounced deal on the scene.

The last passenger in the vehicle, 22 year old Kayla Delisi of Salem was transported to Emerson Hospital in Concord.

UPDATE: 8:59 p.m., 3/25/12 — The Massachusetts State Police have announced the crash occurred in Boxborough, not Littleton, and that Delisi and Kheam were not wearing their seatbelts when they were sitting in the back seat of the vehicle.

Dana and Kelley were both wearing seatbelts according to the police.

Source:  patch.com