WI-13/WI-34 just end WI-34 at US-10. WI-13 was rerouted WI-34 should have just changed to WI-13 not became a duplex with it.
That's far from the only unnecessary concurrency in Wisconsin - WI-47 would logically be two or three different routes, and it even ends while concurrent with WI-182, which also ends at WI-47's terminus. Either end 182 at 47 or 47 at 182; don't make a pointless concurrency.
And I'm certain there are others, too. I agree with CNGL's point that any route that ends while concurrent with another should be truncated.
Edit: And what is the exact reason for the existence of I-894 when it is in its entirety concurrent with at least two other highways? Just call it 41, people.