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HOUSTON–(BUSINESS WIRE)–Boardwalk Pipeline Partners, LP (NYSE: BWP) (the “Partnership”) today
announced the commencement of a secondary public offering of 10,000,000
common units owned by Boardwalk Pipelines Holding Corp., which
indirectly wholly owns the Partnership’s general partner and is a wholly
owned subsidiary of Loews Corporation. The underwriters are expected to
be granted a 30-day option to purchase up to 1,500,000 additional common
units.

The Partnership will not receive any of the proceeds from this offering
and the number of outstanding common units of the Partnership will
remain unchanged. The offering will be made under the Partnership’s
effective shelf registration statement on Form S-3, filed with the
Securities and Exchange Commission.

Barclays Capital, BofA Merrill Lynch, Citi, Morgan Stanley, UBS
Investment Bank and Wells Fargo Securities are acting as joint
book-running managers for the common unit offering.

A copy of the preliminary prospectus supplement and accompanying base
prospectus relating to this offering, when available, may be obtained
from:

• Barclays Capital, c/o Broadridge, Integrated Distribution Services,
  1155 Long Island Ave. Edgewood, NY 11717. By telephone at (888)
  603-5847 or by email at This e-mail address is being protected from spambots. You need JavaScript enabled to view it ;
• BofA Merrill Lynch, 4 World Financial Center, New York, NY 10080,
  Attn: Preliminary Prospectus Department or email This e-mail address is being protected from spambots. You need JavaScript enabled to view it ;
• Citi, Brooklyn Army Terminal, Attn: Prospectus Dept., 140 58th Street,
  8th floor, Brooklyn, NY 11220. By telephone: (800) 831-9146 or by
  email at This e-mail address is being protected from spambots. You need JavaScript enabled to view it ;
• Morgan Stanley, Attn: Prospectus Department, 180 Varick Street, 2^nd
  Floor, New York, NY 10014. By telephone at (866) 718-1649 or by email
  at This e-mail address is being protected from spambots. You need JavaScript enabled to view it ;
• UBS Investment Bank, Attn: Prospectus Department, 299 Park Avenue, New
  York, NY 10171. By telephone at (888) 827-7275; or
• Wells Fargo Securities, Attn: Equity Syndicate Dept., 375 Park Avenue,
  New York, NY 10152. By telephone at (800) 326-5897 or by email at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

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 163 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.