A Roman bridge in Iraq

"Roman bridge, Eski Mosul, with policeman on the right. Cat. Stein LHAS Photo 23/1 (38).  

Photo by the Hungarian-British archaeologist Aurel Stein reconstructing the route of Alexander the Great in Persia, 1930s.

First publication: the Aurel Stein site of the Library of the Hungarian Academy of Sciences prepared by us, April 2008."

From the ever-interesting Poemas del rio Wang, which has a second photo (?of the same bridge).  One is to presume there was some sort of ramp structure or additional arches, and that the working bridge would have looked something like this one:

One would also assume that the waterway was more formidable in Roman times (or, perhaps more likely, that the flow is seasonal).