My trusty colleague Jorgen Christensen-Ernst sent a recent dispatch on some further street finds this time in the Hurriyet Caddesi. This street runs south from the major junction at the old bridge.
Thus what we see in the following photos is a structure that is parallel to the river bank. Without more information we can only conjecture but there is clearly a series of arches (below) of some form visible.
Then here is a single arch.
And some less distinct images.