That bridge looks strange
But if it’s a built-in-asset, it should work without any changes. Did you check how that bridge appears in an a brand new T:ANE-Test-Route just created by yourself e.g. using a single baseboard?
Are you sure that you did not do some wrong overwriting while installing all the Donner Pass dependencies?
I have never seen a built-in appearing with such a wrong texture – perhaps there is something additional wrong.
Your’s TUME