MELBOURNE (Standard&Poor's) Nov. 2, 2005--Standard&Poor's Ratings Services said today the 'AAA' credit rating on Lane Cove Tunnel Finance Co. Pty. Ltd.'s (LCTFC) credit-wrapped senior debt, and the 'BBB+/Stable' corporate credit rating on Leighton Holdings Ltd. are not immediately affected by the collapse of a Lane Cove Tunnel ventilation shaft. The 'AAA' insured debt rating on the A$1.14 billion guaranteed secured bonds issued by LCTFC reflects the unconditional and irrevocable guarantee for the payment of scheduled interest and principal on the Tranche 1 bonds, and the unconditional and irrevocable guarantee for the payment of scheduled interest and principal on final maturity on the Tranche 2, 3, and 4 bonds by MBIA Insurance Corp. (AAA/Stable/--). The 'BBB-' stand-alone
