Highway engineers have said bridge walls in Wisconsin can and should have metal railings which curve inward towards the traffic lanes to redirect an out-of-control vehicle away from a fall over the edge, and in light of a recent such fatal crash off the Hoan Bridge a couple of weeks ago, it's worth asking why the rebuilt, $240 million span does not have this safety feature?
Some people say the bridge prior to the recently-completed reconstruction had such railings. I don't know, but I had noticed last month how low is the wall, and now I see in the shots I took today on the bridge that there are no safety railings on top of the walls:

Some people say the bridge prior to the recently-completed reconstruction had such railings. I don't know, but I had noticed last month how low is the wall, and now I see in the shots I took today on the bridge that there are no safety railings on top of the walls: