Unable to answer "What’s the surface here?" – on bridge: Foot Path – way/1308578145 via StreetComplete 63.2:

This is a wooden dock

Unable to answer "What’s the surface here?" – on bridge: Foot Path – way/315235920 via StreetComplete 61.1:

There is a narrow wooden footbridge next to a shallow crossing of the river that has been gravelled over. Not for cars with low clearance.