Big Dig ceiling collapse
Boston.com
Emergency personnel worked at the scene of the ceiling collapse.
Emergency personnel worked at the scene of the ceiling collapse.

Both sides of the connector tunnel are expected to remain closed through Tuesday, Massachusetts Turnpike Authority Chairman Matthew Amorello said. Traffic headed east to Logan will be detoured through the Callahan Tunnel, and westbound traffic exiting the Ted Williams Tunnel will be detoured through South Boston.
(AP Photo)