In article <36cd163b.0@news.highway1.com.au>, "David & Jan Winter" <winterd@nospam-icenet.com.au> wrote: >Er, how exactly do the powers that be go about building overhead tunnels? Easy. First you suspend a few hundred tonnes of dirt above the road. Then you dig a tunn.... err... I see, how do we keep the dirt up there? Regards, Galen Rutledge