This is a very interesting bridge. Has anybody been able to confirm the construction date of 1930? I would not be surprised if it was a couple decades older. It reminds me a little bit of some of the bridges built by Walter Sharp in the early 1900s. The Walter Sharp Bridge Company was very prolific in Kansas and according to what I have read build bridges in other neighboring states too. Given the fact that this bridge is only a couple miles south of the Kansas-Oklahoma State Line I wouldn't be shocked if it was built by Walter Sharp or somebody who studied under him. Of course this is pure speculation just based on appearance. The date 1930 is a bit intriguing. Stone arch bridges were fairly commonly built in Kansas (and perhaps Oklahoma) until about 1915. Then, there was a lull in stone arch bridge construction until the Depression era when stone became a popular choice for WPA projects and the stone arch saw a resurgence in popularity. Thus, there is about a 20 year gap in which you don't seem to find stone arch bridges in this region.
I hear they tearing down this bridge...such a shame. I used to travel this road a lot. I live elsewhere now. I hope this will be reconsidered!