Starting tomorrow, for four days, the South Park Bridge (seen above during a Duwamish River tour last week) will be closed to vehicle traffic, and will not be opening for marine traffic, 7 am-7 pm daily. Here’s the official advisory; this is the round of closures postponed from a week and a half ago. The county says engineers will be doing testing to gather data that’ll be used when they finally have the money to build a replacement bridge.