Boardwalk Prices Public Offering of Common Units

HOUSTON, Aug 11, 2009 (BUSINESS WIRE) -- Boardwalk Pipeline Partners, LP (NYSE:BWP) today announced that it has increased its previously announced public offering of 7,000,000 common units to 7,250,000 common units and priced the offering at $23.00 per unit. Boardwalk expects the offering to close on August 14, 2009. Boardwalk has granted the underwriters a 30-day option to purchase up to an additional 1,087,500 common units.

In connection with this offering, Boardwalk will receive net proceeds after offering expenses of approximately $164 million, including the general partner's proportionate capital contribution of $3 million. Boardwalk expects to use the net proceeds from this offering to fund a portion of the cost of its expansion projects, either directly, or indirectly by increasing its borrowing capacity available to fund such projects through repayment of indebtedness under its revolving credit facility.

Barclays Capital Inc., Citigroup Global Markets Inc., J.P. Morgan Securities Inc., Morgan Stanley & Co. Incorporated, and UBS Securities LLC are acting as joint book-running managers for the offering.

A copy of the final prospectus supplement relating to this offering - when available - may be obtained from any of the underwriters, including:

• Barclays Capital Inc., c/o Broadridge, Integrated Distribution Services, 1155 Long Island Ave. Edgewood, NY 11717. By telephone at (888) 603-5847 or by email at barclaysprospectus@broadridge.com;
• Citigroup Global Markets Inc., Brooklyn Army Terminal, Attn: Prospectus Dept., 140 58th Street, 8th floor, Brooklyn, NY 11220 By telephone: (800) 831-9146 or by email at batprospectusdept@citi.com;
• J.P. Morgan Securities Inc., 4 Chase Metrotech Center, CS Level, Brooklyn, NY 11245. By telephone at (718) 242-8002 or by fax (718) 242-8003;
• Morgan Stanley & Co. Incorporated, Attn: Prospectus Department, 180 Varick Street, 2^nd Floor, New York, NY 10014. By telephone at (866) 718-1649 or by email at prospectus@morganstanley.com; and
• UBS Securities, LLC, Attn: Prospectus Department, 299 Park Avenue, New York, NY 10171. By telephone at (888) 827-7275.

This press release does not constitute an offer to sell or a solicitation of an offer to buy any securities nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. The offer is being made only through the prospectus supplement and accompanying base prospectus, which is part of a registration statement that became effective on March 5, 2007.

Boardwalk Pipeline Partners, LP, is a limited partnership engaged, through its subsidiaries, Gulf Crossing Pipeline Company LLC, Gulf South Pipeline Company, LP, and Texas Gas Transmission, LLC, in the interstate transportation and storage of natural gas. Boardwalk's interstate natural gas pipeline systems have approximately 14,200 miles of pipeline and underground storage fields having aggregate working gas capacity of approximately 160 Bcf.

This press release contains forward-looking statements relating to expectations, plans or prospects for Boardwalk Pipeline Partners, LP and its subsidiaries. These statements are based upon the current expectations and beliefs of management and are subject to certain risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. These risks and uncertainties include market conditions and other factors beyond the company's control and the risk factors and other cautionary statements discussed in Boardwalk's filings with the U.S. Securities and Exchange Commission.

SOURCE: Boardwalk Pipeline Partners, LP

Boardwalk Pipeline Partners, LP
Sr. Vice President and Chief Financial Officer
Jamie Buskill, 713-479-8082
or
Director of Investor Relations
Allison McLean, 866-913-2122