At the risk of complicating Peterli's orderly collection of threads, I'll add to this thread about villages some pictures taken in Olten in September, 2018, as well as some information about the bridge.
I found the old town quite pleasant to wander around, even on a rather cloudy day.
Besides the bridge, two items in particular caught my attention. One is the fresco in the Rathskeller, the other is Toulouse.
The fresco shows the Oltners departing for battle in the Peasants War , in 1653.
Quoting from Wiki, Niklaus Leuenberger who was their leader, negotiated the settlement of the conflict. Then,
<<"Niklaus Leuenberger was beheaded and quartered in Bern on September 6, 1653.[a]">>.
Even today, his memory is alive in the Emmental. I saw a memorial to him while walking in Rüderswil in 2010, still with fresh flowers. The Leuenbergers are still active in Swiss politics.
Toulouse the cat was the "king" of Olten.
Scroll down a few pages (to page 4) in this nice presentation about the museum, for
an explanation of his name.... derived from the local dialect.
As you leave the bridge and enter the old town at a small plaza, a statue of Toulouse is just to your left. From that viewpoint, he can survey all the visitors entering the old town.
The Bridge -
I was struck by how thin the supports for the bridge are. No stone pillars, as are under the bridge at Aarberg, mention in Peterli's thread about bridges.
This link shows that the bridge was heavily damaged by fire.
When I was there, a portion of the bridge was closed off by a metal fence, barely visible in one photo taken inside the bridge with my smartphone. Sorry, not high quality. But, it lets us see the timber work. The bridge was open for pedestrians.
I added a couple of images from my walk around the old town.