Bridges and Viaducts
![http://www.highestbridges.com/wiki/images/5/50/1YanjinheArchBridge.jpg](https://hotrails.net/wp-content/uploads/2014/07/1YanjinheArchBridge-e1445378244440-350x200.jpg)
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…