looks like that asphalt on the bottom there that allows site access from Station and National street will also be used keep National open when the current sewer/water construction goes into the next phase on Station. hard to explain but you will see the National street flow shift over and cut through that corner of the site for a month or two while they finish the sewer connection there. hard to properly explain but when you are in the area you will see how it all lines up. smart solution to keeping National open. even now you see they have rerouted Westbound National between Station and Main for the current phase of sewer/water work....I am just happy they kept it open.
this shows more or the view also >>
https://www.youtube.com/watch?v=eG5GdEh7GVs