Have heard this idea before, but interesting article nevertheless: http://www.wired.com/2015/01/edmonton-freezeway-ice-skating/

David Patman,  P. Eng.

Transit Planner

Winnipeg Transit | Service Development Division

421 Osborne Street | Winnipeg, Manitoba R3L 2A2

P: 204-986-5737 | dpatman@winnipeg.ca