It was Haigh hall itself that looks a bit leany to the left to me not picking at your shot just saying what i think and having seen this bridge thousands of times i cant recall seeing it with a lean and your last shot seems to confirm this looking at the bridge end post nearest to us.but will take a look more carefully when up there again.
If you run the shot up to the top of your screen so the water at the opposite bank is right at the top you will see it dips very slightly down on the left side.When doing landscapes do you not use the green levelling line that shows on your screen i find that to be a good help,again not picking at your shot just trying to help and i must have a bit of that OCD in me.
I don't use the green line,it's never right,I used the level line in CS2,the left side does drop,but the right side looks ok,I had the 19mm converter on the X100,I suppose that could cause it,a bit of distortion.!
It is twisted,I reckon if the camera had been tilted down a bit on the right,the whole pic would have been a bit lower,and the water still level.
Last one for me as well. Whether the other shot is straight or not it doesn't look right! But who cares....