Washigton: I-5’s Weird Bottleneck, Snow Tires

Washington Road Construction | I-5 Exit GuideWhy does northbound Interstate 5 north squeeze from four lanes down to two near the Seneca Street exit? Photo: Google Street View This goes back to the original construction of Interstate 5 through Downtown Seattle in the 1950s, according to regional traffic engineer Mark Leth. The short version is that engineers at the time thought the role of the freeway was to bring people into Downtown …

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