As someone who uses the Southern Bicycle Connection (17th Ave S) to Midtown Greenway connection everyday, there is an (unmarked) convoluted connection:Even this smaller segment has big connectivity gains, though; neither the 17th Ave bike boulevard nor the SB lane on Portland have Greenway ramps, so previously the only connection between the two was a pretty hostile stretch of 24th St.
17thave by Matt Steele, on Flickr
There's also a much easier connection for southbound Portland now that the bicycle lane was moves to the right hand side of the street.
portlandave by Matt Steele, on Flickr