The Future Of Monorail Design In Seattle

"Seattle's monorail stations of the future may rise three stories high, featuring unique columns called 'irises' that allow easy access from a building... Project director Joel Horn said irises would give neighborhoods an alternative to traditional side-by-side tracks, which would require larger stations. Irises also would lessen the risk of construction delays, because they could be built before the stations were completed. If new buildings are erected later along the route, boarding platforms could be attached afterward."