Overpasses

Construction has begun on a new park beneath a Toronto freeway overpass. The Toronto Star's Christopher Hume says the park will change the city forever.

Highways can be deadly for animals, especially when they cut directly through habitats. A recently completed design competition sought ideas for creating animal-safe bridges over highways.

Writer Sarah Lacey, stuck in hours of traffic in Bangalore, decides that prefabricated highway overpasses are the solution to the world's overcrowded, traffic-choked cities.