In the 1986 USGS aerial photo below, you can clearly see the existing B&O bridge, the O&B piers and the Western Maryland RR trestle crossing the B&O tracks.

The bridge is the 2008 photo above is the B &O RR. The piers are from the O&B RR ( this will be explained later ). In the 1900 USGS map below, you can see the O&B bridge crossing the river to the west from South Connellsville, headed to the Sitka and Dunbar coke ovens.