As we get closer to Sydney, the Southern Highlands constricts down to a narrow spit of cleared land nestled between the Blue Mountains on the west and the Upper Nepean gorge on the east, and almost all of the transport infrastructure squeezes into a narrow 500m-wide band between Yerrinbool and Bargo. This limits the room available for deviations but also gives us a choice of several existing corridors to utilise.
How do you solve a problem like Canberra Station? It’s in completely the wrong spot, and they went and built a lake and a few suburbs between the existing line and the city centre. How do we get there without resorting to a tunnel?
After tunnels, bridges and viaducts are the second-most expensive line-item in the most of the various proposals for Australian high-speed rail. Here we will provide estimates for cost-per-kilometre of standard bridge types, as well as rail-specific cost-functions for major bridges that require unique specification. AECOM13 estimates The 2013 high speed rail …
