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    Sullivan Square water main break throws wrench into morning commute

    Karen Kiley via Twitter
    A look at the flooding early Tuesday morning.

    Work crews will be in Sullivan Square in Charlestown throughout Tuesday repairing a broken water main while also fixing the damage to the roadway caused when pipe burst and flooded the intersection during the morning commute, officials said.

    The 24-inch pipe burst shortly before 6 a.m., and the resulting flood led to the closure of ramps into Sullivan Square from Interstate 93 and to longer travel times for people coming from Somerville and Everett who regularly use Route 99 to get into Boston.

    The Boston Water and Sewer Commission reported the break took place near the intersection of Main Street and Maffa Way. The commission tweeted that water continues to flow to homes and businesses in the neighborhood, although the pressure may be noticeably lower.

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    “Water main controlled, substantial damage to road, crews on scene for most of the day for repairs,’’ the commission tweeted at 8 a.m.

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    The Boston Transportation Department tweeted that Alford Street is closed to the border with Everett. Other road closures and delays should be expected throughout the day, officials said.

    At about the same time that the Charlestown pipe burst, a smaller water main broke in the Marine Industrial Park in South Boston, according to commission spokesman Stephen Mulloney.

    Mulloney, in an e-mail, said the water supply was not disrupted because crews redirected the water past the broken pipe.

    A forensic examination of the broken pipes will be conducted to determine why the pipes failed, according to Mulloney.

    ellement@globe.com@JREbosglobe