Not to mention the _costs_ to society/economy to rescue risk-takers every time they get stranded or injured.
I would fine a world where all risks are forbidden to be very sad. I've climbed plenty of cranes and rope-swinged many bridges and viaducts. Of course it's illegal, but for me that's what brings pleasure to my life. Of course I could fall and pancake on the floor. Of course that'll cost the society. But I work, and I cycle instead of driving to work, so I suppose that I would cost the same in average.
As for the bridges and viaducts, there's either a river underneath (some fish may be harmed), or a plain forest.
So no, no passerby is "put at risk". The risk is very low. It seems dangerous swinging from a crane, but the gear is meant for that. Driving to work is way more dangerous.