Concrete Truck Collides with More Than Dozen Vehicles in Concord

Further investigation revealed that the concrete truck, which was not carrying any contents at the time, had been traveling south on Interstate 93 when it veered off the right side of the road, striking a guardrail near the Exit 14 off-ramp. The truck continued for approximately 100 feet until the guardrail ended, then traveled to the right and went through a chain-link fence.