NSW election - Liberal proposal for Spit road tunnel Representatives of the Liberal party have been distributing the leaflet reproduced below to motorists queueing on Spit Road. The tunnel shown would be about 6.5 km long, much of it below water, plus ramps. The "BTRE" referred to is the Commonwealth Bureau of Transport and Regional Economics. Their evaluation (of a tunnel following a somewhat different route) can be seen at http://www.btre.gov.au/docs/wp_53/index.html or downloaded as PDF. (84 pages, 2444807 bytes).