by Brandon Musser
State Route 520 (SR 520) is a 12.8 mile corridor linking downtown Seattle and its Eastern suburbs of Bellevue, Kirkland, and Redmond (collectively known as the “Eastside”) which are separated by the 30 mile long Lake Washington. The route is of considerable economic importance to the greater Seattle area as it provides one of only two passages across the lake, connecting the dense downtown residential area to several large commercial centers, including Microsoft's main campus in Redmond which employs nearly 40,000 people (another employer in the area you may have heard of is Boeing). Every day, around 115,000 vehicles travel...