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Toby Talbot, File, Associated Press
FILE - In this Sept. 6, 2011, file photo, an excavator moves rocks on Vermont Route 107 on Friday, Oct. 14, 2011 in Bethel, Vt. State officials are going to mark the reopening of Vermont Route 107, the last state highway closed by flooding from tropical storm Irene to reopen. It marks the completion of the Herculean task of getting Vermont going again after Irene.

MONTPELIER, Vt. — Four months and a day after Tropical Storm Irene inundated Vermont, officials are planning to mark the reopening of the last stretch of highway that was closed by the storm — a major east-west artery that was reconstructed in an amazing 119 days.

Route 107 between Bethel and Stockbridge is due to be reopened Thursday afternoon by officials planning to gather at the Stockbridge Central school.

In a storm that left a dozen Vermont towns cut off from the outside world for days, damaged or destroyed more than 500 miles of roads and 200 bridges, killed six and reshaped much of the low-lying countryside, it was the Route 107 repair that posed the biggest single engineering challenge.

The fix included 46 subcontractors and 20,000 hours of heavy equipment time.