Proposal by Macquarie Bank, Macquarie Infrastructure and Sensible Transport Action Group for 5.1 km-long toll tunnel from Warringah Expressway at Cammeray to Spit Road on the city side of the Spit under consideration by Sydney Roads and Traffic Authority. Estimated cost around EUR500 million includes need for a higher bridge over the Spit to replace opening bridge. Visit www.rta.nsw.gov.au 13/09.