Federal prosecutors have agreed to drop charges against one of the Big Dig's largest contractors in a 2006 tunnel ceiling collapse that killed a Boston woman.
The WBZ-TV I-Team has been exposing problems with the Big Dig for more than a decade. Ever since a groundbreaking series in 1995, the I-Team has been probing the use of billions of your tax dollars and holding those responsible, accountable.
Watch: Archived Reports
Follow the timeline of how the Big Dig Disaster unfolded, from the tunnel collapse on July 10, 2006 through the repairs and investigation.
View: Photo Timeline
May 2006: Executives Of Big Dig Supplier Arrested
April 2006: Big Dig Tunnel Security In Question
Sept 2005: New Big Dig Mistake Could Be Costly
April 2005: FBI Targets Big Dig Supplier
March 2005: New Safety Concerns for Big Dig Tunnel
Sept 2004: Big Dig Tunnel Springs Big Leak
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