The signs say, "No entry Except buses and Cyclists"
However, it is difficult to figure out where the bike path is. There is a large pile of snow straight ahead and walking tracks around the left and right. But there isn't really a bike path. If I want to go down Spence on a bicycle, I have to off road it around the piles of snow and onto the sidewalk, mixing with pedestrians and getting stuck in ruts.
I wrote this post back in the winter, when you could see the painted bike lane. While the snow has melted and you can see the paint now, I still think this is a valid critique.