It's tagged highway=path & bicycle=no now. https://www.openstreetmap.org/way/6968377/history

It's definitely not a good place to cycle when Camden market is open, but even when it's not you've got some narrow walkways around these sheds: https://commons.wikimedia.org/wiki/File:Camden_Lock_Regent%27s_Canal_Basin_from_Suffolk_Walk_bridge_0886.JPG  What's the tag for "probably better to dismount for this bit"?