This was 10C, a pair of
double sluice gates. The photo on the left was taken in 1906 and
the one on the right in 2011.
Seeing the current situation at this location was the greatest
disappointment that I had with this project. The gates are
completely
gone. I do not know if they were broken up to get at the metal
components or if wave action caused them collapse outward
and sink into the mud. Whatever happened, there is no visible
trace of them today.