Route Description
SR-520 originates at Interstate 5 in Seattle at the north end of Capitol Hill just south of Roanoke Park.
It bridges Portage Bay on a viaduct, crosses through the Montlake neighborhood, and continues east on a causeway through the marshlands of the Washington Park Arboretum and across Foster Island. From there it crosses Lake Washington on the Evergreen Point Floating Bridge (1963) to Medina. At 7,578 feet (2,310m), it is the longest floating bridge in the world.
From Medina, it traces the border between Hunts Point and Yarrow Point to the north, and Clyde Hill to the south. Intersecting with Interstate 405 in Bellevue, it then runs into Redmond. It bisects the Microsoft campus, passes Nintendo of America headquarters and crosses the Sammamish River and Bear Creek, before ending at a junction with State Route 202. A set of ramps connecting SR-520 to Avondale Road NE were completed in 1996.
The original name of the freeway in planning documents was the Roanoke Expressway and later the Roanoke Freeway, due to its terminus at Interstate 5 near Roanoke Street and Roanoke Park in Seattle.
Read more about this topic: Washington State Route 520
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