Traffic Lab

Traffic Lab is a Seattle Times project that digs into the region’s thorny transportation issues, spotlights promising approaches to easing gridlock, and helps readers find the best ways to get around. Traffic Lab receives financial support from Pemco Mutual Insurance Company. Seattle Times editors and reporters maintain editorial control over Traffic Lab content.

Prepare for 520 bridge, I-5, I-90 weekend closures in Seattle area

Several major roadways will be partly or fully closed this weekend. Here are the potential trouble spots.

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