Is the bridge connecting Sanctuary Hills to the road to concord supposed to be the rebuilt old north bridge? It’s in a similar location and looks surprisingly accurate. I think Sanctuary Hills is located where in are Universe the Minute Man National Historical Park is located.

It I remember correctly, Preston does refer to the Bridge as the Old North Bridge if you escort him and the settlers to Sanctuary

The Wiki says it is. Another clue is the Minuteman Statue which Bethesda put on the wrong side.