A woman was killed and lanes were shut down on Route 128 Tuesday after a mattress flew off the roof of a truck and led to a two-car crash, authorities said.
At about 3:15 p.m., the mattress flew off the roof of the truck traveling southbound on the highway near the Burlington Mall. A car stopped abruptly to avoid the mattress, causing another vehicle to crash into its bumper, said Assistant Burlington Fire Chief Michael Patterson.
Emergency responders rushed to the scene and found one car on its side in the middle of the road, said Patterson.
Each car was occupied by one person. Both were taken to the hospital, said Patterson. “The condition of the first car’s occupant was grave,” he said.
That victim, a 56-year-old Framingham woman, died from her injuries at Lahey Clinic later that day, State Police said in a statement.
The state Department of Transportation tweeted at about 3:20 p.m. that only one southbound lane was open. Shortly after 4:30 p.m., State Police tweeted that all lanes were open.
The State Police accident reconstruction and crime scene units responded to the scene, near the Burlington-Lexington line.
At 7:30 p.m., State Police tweeted a description of the vehicle that lost the mattress. Police are looking for a large dump truck with a white cab and a dark bed with wood along the sides.
Globe Correspondent Jennifer Smith contributed to this report. Jacqueline Tempera can be reached at email@example.com.