Walk with me Abandoned Places: Seattle's 520 ghost ramps, Bridge to nowhere (2/17/14)

These are the WA 520 overpass to nowhere or (ghost ramps) of Seattle.
There are 2 ramps currently used for the Westbound 520 off ramp connection to the Washington Park Arboretum while the other serves as an on ramp only to SR 520 Eastbound. The others are unused. They were originally part of a plan to build the R. H. Thomson Expressway which would have cut through the arboretum and down through Seattle towards the I-90/I-5 interchange. Citizens rallied a freeway revolt against the plan on May 4, 1969. Construction near the Arboretum later continued but citizen protest eventually won out and the plan was dropped in 1971.