The company said it will use the proceeds to fund some of its expansion projects and to increase its borrowing capacity.
Boardwalk Pipeline said it has granted the underwriters a 30-day option to purchase up to nearly 1.1 million additional common units.
Barclays Capital, Citigroup Global Markets, JPMorgan Securities, Morgan Stanley and UBS Securities are serving as joint book-running managers.
A service of YellowBrix, Inc.
