There is a most excellent way to ride from the Greenway to High Falls, over the Clinton Street elevated bikeway (who knew?), to Main and South, and up to the West Side of High Falls, with some interesting urban sights along the way.
By riding on the over-wide under-used sidewalks, you are never in traffic. These over-wide under-used sidewalks could easily be turned into dedicated bike lanes, with dedicated pedestrian walkways on the other side of each street.
These photos were taken with my iphone and a great little app for making panoramas, called Stitch).