This weekend, WSDOT will close the Alaskan Way Viaduct for inspections and, as a bonus, will conduct public tours of Seattle's most embattled piece of architecture. The viaduct is Seattle's concrete corset, holding its commercial flab of glass and steel from tumbling into Puget Sound. The 45-minute tours will show off the structure's seams: sinking sections, post-Nisqually-earthquake braces, and plastic crack monitors that measure how quickly it's falling apart. See it now, while it's still standing. (Tours 9:30 am–noon, enter at the Columbia Street on-ramp. Reservations required: E-mail

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