
Looped greenway + TOD around rail
National model of rails-to-trails urbanism
Atlanta's BeltLine (from 2005) is converting a 22-mile loop of disused railway encircling the city into a continuous greenway, transit corridor, and linear park, stitching together dozens of neighbourhoods and catalyzing adjacent development.
The BeltLine is one of the most ambitious adaptive-reuse infrastructure projects in the US, a landmark of the greenway movement — though it has also become a textbook case of green gentrification and displacement pressure.
Partly realised and still under construction; completed segments have spurred major adjacent development and remain among the most-used trails in the US, with full loop completion targeted later this decade.
Widely cited as a driver of trail-side gentrification and rising housing costs that displace the lower-income neighbourhoods the project was meant to serve.