On my daily commute, I cross a lift bridge over a ship canal. This bridge has an open grated steel deck for a riding/driving surface. At the Burlington end of the bridge a sign says "All cyclists must dismount and use sidewalk" The Hamilton end says nothing. I've never had trouble riding on this bridge, but I do use the sidewalk in the rain.
Anyone ever had trouble riding on these steel bridge decks?? Do any other bridges have similar signs to deter cyclists??