Boston firefighters use saw to cut open truck. Photo by BFD.
A trash truck burst into flames in the Ted Williams Tunnel around 12:50 p.m., shutting the tunnel and sending a plume of black smoke high into the air by way of the tunnel exhaust-vent building across from the South Boston convention center.
The Boston Fire Department reports the fire was knocked down shortly after 1:30 - after firefighters used a heavy-duty saw to open up the back and expose the flaming trash. Firefighters used foam to help douse the flames.
The department adds the tunnel vent system worked exactly as planned in quickly evacuating smoke.
Truck about to be hauled out of tunnel (photo by BFD):