Train Viaducts

May 1, 2016, 5am PDT
The High Line's brand of urban reinvention has caught on, sparking a number of similar projects throughout the world. In addition to disused rail, many projects repurpose old road infrastructure.
Citiscope
December 22, 2011, 7am PST
LA to SF in 2 hrs, 40 mins? That promise in the proposition that voters approved in 2008 could be the train's undoing, as to keep that schedule it will require more expensive design, including viaducts and tunnels, than would otherwise necessitate.
Los Angeles Times