Transcontinental Gas Pipe Line Co. LLC, a wholly owned subsidiary of Williams Partners L.P. (NYSE: WPZ), announced it has extended its offer to exchange all of its privately placed outstanding 5.40% Senior Notes due 2041 until 5 p.m. New York City time on Wednesday, March 28, 2012. The offer was previously scheduled to expire at 5 p.m. New York City time on March 23, 2012.

As of 5:00 p.m. New York City time on Friday, March 23, 2012, holders of $374,310,000 aggregate principal amount of the outstanding 5.40% Senior Notes due 2041 (constituting approximately 99.8% of the ...