Exploring past, present and future urban technologies in science and fiction, etc.
https://momentummag.com/ottawa-to-transform-railway-bridge-for-cyclists-and-pedestrians/
http://www.capitalgems.ca/hurdman-train-bridge.html
https://www.google.com/maps/@45.4167834,-75.6641392,3a,60y,148.41h,87.9t/data=!3m6!1e1!3m4!1s7t_bONM5wMb7M_deA5wx5g!2e0!7i16384!8i8192