Clark/Robert: If you are interested, I suspect there are more of these concrete girders in Kansas that are not currently listed in Bridgehunter. During my trip I stumbled upon one. In Michigan and Illinois they are often listed in NBI as concrete slabs... the same seems true here... look for the span length and construction date to help find them among the true concrete slab type bridges. I added the one I found for your reference: http://www.bridgehunter.com/ks/atchison/anderson-road/
Nice Find!
This one has been added to the KHRI:
http://khri.kansasgis.org/index.cfm?in=015-835