I found a drawing of a bridge shoe that looked like it would work for what I needed. (meaning it was simple enough). I found this is a book titled “Types and Details of Bridge Construction: Plate girders – by Frank Woodward Skinner and published in 1906. On page 158 there is a nice drawing of a Boller & Hodge standard bridge shoe.
I go into much more detail on my website – Boller & Hodge Bridge Shoe.