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Engineers have to ensure the bridge will remain buoyant when a pair of 300-ton trains pass each other, and that the high-voltage current that powers the trains won’t stray into the bridge’s pontoons and corrode its steel rebar. They spent $53 million just to design the section across Lake Washington. — The Seattle Times
The Lacey V. Murrow Memorial Bridge is a floating bridge that stretches across Lake Washington, connecting Seattle and Bellevue through Interstate 90 freeway.This April the final design promising to replace the center express lanes of I-90 with full speed light rail was signed off. Subject to... View full entry
Sitting atop Lake Washington, the new State Route 520 is now the longest floating bridge in the world—beating its predecessor, the old State Route 520, by 130 feet [...].
This new bridge has stronger pontoons than the last one, and can withstand more buffeting from wind and waves. It also has a stormwater collection system, bus lanes in both directions, a path for bikes and pedestrians, and the capacity to someday accommodate a light rail system.
— atlasobscura.com
Related stories in the Archinect news:Seattle builds village for the homelessSeattle's proposed 101-story 4/C Tower considered as too tall by the FAASusan Surface, the "humble pioneer" for socially responsible design View full entry
