Google maps data is too old to show the current configuration of the one near Rose Quarter, but here's the more involved one in Kenton. Bike lane enters from the east and onto cement bike lane, goes through a crazy 5mph left-right chicane to get over the tracks.

I always take the lane on this one. I tried the chicane once. Did not like it. A much mellower chicane could be put in place in the spot you show, though.

http://maps.google.com/maps?ie=UTF8&...,0.001635&z=20