Updated 2/12/2020:
Yesterday I acquired a new Pier #1 for the bridge. Prototype photos first.
In the first photo, you can see Pier 2 in the foreground (it's a "pocket" pier situated in the river) with Pier 1 in the background.
The second photo gives a clearer view of Pier 1 from north of the bridge. Note the difference in coloration between the two photos.
Now, here is the new Pier #1 and the span between it and the stone arch.
And this is a better look at Pier 2.
Now, let's look at both piers. Compare these next two photos with the first one.
Next steps are to identify the correct coloration, paint the pier, and then weather it appropriately.
More when I know it. 
George
