Jan Gehl writes, "Pedestrian underpass systems had the additional disadvantage of being dark and dank, and people generally feel insecure if they are unable to see very far ahead. In short, the often expensive pedestrian underpasses and bridges were in conflict with the basic premises for good pedestrian landscapes. Seen in the perspective of current visions of inviting people to walk and bicycle more in cities, clearly pedestrian underpasses and bridges can only be solutions in those special cases where major highways must be crossed. Solutions must be found for all other roads and streets that allow pedestrians and bicycles to stay on street level and cross with dignity. An integrated traffic model will also make city streets friendlier and safer as cars will have to move more slowly and stop more often.
Today the world is full of abandoned pedestrian underpasses and bridges. They belong to a certain time and a certain philosophy." Read the complete article and see photos here.