Along Route 16, close to where it crosses the Tomei Expressway, the walkway ducks under a couple of lanes of road. This area has quite a lot of construction happening at the moment, so Im not sure how long this Rakugaki will last, but it does seem to have been there for quite a few years thus far.
The flickr set is here:
http://www.flickr.com/photos/pigsofdarkness/sets/72157607749735676/
kirameki san experiences sustained loss of traction 