how many things we need to consider when designing a flyover?
1. density and directions of pedestrian flow
2. availability of space for insertion of the structure
3. length of span across the street and type of structure, material
4. need for handicapped access. ramp?
etc. etc.
in singapore, there is another major concern, how to blend it with the surroundings. in other words, how to make it green. every single flyover, both pedestrian and vehicular, has standard details to naturalise the unpleasant-looking concrete structure.
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