Seattle already has the world’s longest floating bridge, and next month, it’s going one step further: building the world’s first floating light rail line.
The undertaking is part of a $3.7 billion project to build a light rail corridor linking Seattle to the city of Bellevue on the east side of Lake Washington by 2023. It’s a tricky endeavor; the floating bridge has to withstand the pressure of two pairs of 300-ton trains traveling at speeds of up to 55 mph. To make it happen, the transit agency Sound Transit is turning to cutting-edge earthquake technology. With 50,000 riders expected daily, there’s absolutely no room for mistakes, the Seattle Times reports: