Macquarie Infrastructure Company Prices Follow-On Offering of LLC Interests

NEW YORK, June 29 /PRNewswire-FirstCall/ -- Macquarie Infrastructure Company LLC (NYSE: MIC) has announced the successful pricing of a registered public offering of 6,300,000 LLC interests of the Company at a public offering price of $40.99 per LLC interest, the closing price of the LLC interests on the New York Stock Exchange on June 28, 2007. 5,701,000 LLC interests were sold by Macquarie Infrastructure Company and 599,000 LLC interests were sold by Macquarie Infrastructure Management (USA) Inc., the Company's Manager. The offering is being made under Macquarie Infrastructure Company's existing shelf registration statement filed with the Securities and Exchange Commission on October 16, 2006, as amended on June 25, 2007 by Post Effective Amendment No. 1, which reflected the exchange of all outstanding shares of trust stock for LLC interests on June 25, 2007. Additionally, the Company has granted the underwriters a 30-day option to purchase up to an additional 945,000 LLC interests to cover overallotments, if any.

Assuming no exercise of the overallotment option granted to the underwriters, the Company expects to receive approximately $223.0 million in net proceeds from the offering, subject to standard closing conditions, following the close on July 5, 2007.

The Company will use the net proceeds of the offering to partially fund the equity portion of its acquisition of 24 fixed base operations known as Mercury Air Centers and 2 fixed base operations known as SJJC Aviation Services, LLC and any remaining amounts for general corporate purposes.

Citi, Credit Suisse Securities (USA) LLC, Merrill Lynch, Pierce, Fenner & Smith, Incorporated and Macquarie Securities (USA) Inc. were the joint book running managers for the offering and A.G. Edwards & Sons Inc., Jefferies & Company, Inc., and Stifel Nicolaus & Company, Incorporated are acting as co- managers.

This press release is neither an offer to sell nor a solicitation of an offer to buy LLC interests, nor shall there be any sale of LLC interests in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the qualification under the securities laws of any such state or jurisdiction. The offering of these securities will be made only by means of a prospectus and a related prospectus supplement. Full details of the offering, including a description of the LLC interests and risk factors, are contained in a final prospectus and prospectus supplement dated June 28, 2007 and available through the joint book running managers: Citi, Brooklyn Army Terminal, 140 58th Street, 8th Floor, Brooklyn, NY 11220; Credit Suisse Securities (USA) LLC, Prospectus Department, 1 Madison Avenue, New York, NY 10010; Merrill Lynch, Pierce, Fenner & Smith Incorporated, 4 World Financial Center, New York, NY 10080; Macquarie Securities (USA) Inc., 125 W. 55th Street, New York, NY 10019.

About Macquarie Infrastructure Company

Macquarie Infrastructure Company owns, operates and invests in a diversified group of infrastructure businesses, which provide basic, everyday services to customers in the United States. Its businesses consist of an airport services business, an airport parking business, a district energy business, a gas production and distribution business, and 50% of a company that owns a bulk liquid storage terminal business. For additional information, please visit the Macquarie Infrastructure Company website at www.macquarie.com/mic.

Forward Looking Statements

This release contains forward-looking statements. MIC may, in some cases, use words such as "project", "believe", "anticipate", "plan", "expect", "estimate", "intend", "should", "would", "could", "potentially", or "may" or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. Forward-looking statements in this presentation are subject to a number of risks and uncertainties, some of which are beyond the Company's control including, among other things: its ability to successfully integrate and manage acquired businesses, manage growth, make and finance future acquisitions, service, comply with the terms of and refinance its debt, and implement its strategy, decisions made by persons who control the Company's investments including the distribution of dividends, the regulatory environment, changes in air travel, automobile usage, fuel and gas prices, foreign exchange fluctuations, environmental risks and changes in U.S. federal tax law.

MIC's actual results, performance, prospects or opportunities could differ materially from those expressed in or implied by the forward-looking statements. Additional risks of which the Company is not currently aware could also cause its actual results to differ. In light of these risks, uncertainties and assumptions, you should not place undue reliance on any forward-looking statements. The forward-looking events discussed in this release may not occur. These forward-looking statements are made as of the date of this release. MIC undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

"Macquarie Group" refers to the Macquarie Group of companies, which comprises Macquarie Bank Limited and its worldwide subsidiaries and affiliates.

Australian banking regulations that govern the operations of Macquarie Bank Limited and all of its subsidiaries, including the Company's manager, require the following statements. Investments in Macquarie Infrastructure Company LLC are not deposits with or other liabilities of Macquarie Bank Limited or of any Macquarie Group company and are subject to investment risk, including possible delays in repayment and loss of income and principal invested. Neither Macquarie Bank Limited nor any other member company of the Macquarie Group guarantees the performance of Macquarie Infrastructure Company LLC or the repayment of capital from Macquarie Infrastructure Company LLC. MIC-GFor further information, please contact: