Corroded panel caused Big Dig's light-fixture crash

03/16/2011 | Patriot Ledger (Quincy, Mass.), The

Massachusetts Transportation Secretary Jeff Mullan says Boston's Big Dig tunnels are safe following an incident last month in which a 110-pound light fixture dropped from a tunnel roof. Mullan said his agency inspected the 23,000 lights throughout the tunnel system and found that a mounting panel corroded by winter weather and de-icing treatment gave way in the Feb. 8 incident. Mullan said one fixture was replaced and 3,000 others repaired.

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Patriot Ledger (Quincy, Mass.), The

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