Ken, ExCon, thank you for the replies. IIRC, from posts here, Ken worked in Newark for many years so you know it well.
I found 2 interesting maps - one is Manhattan Transfer showing the H&M ("Rapid Transit") and PRR main tracks - which must be from between 1911 (when H&M reached Newark Park Place) and ~1937, when the H&M re-routed to Penn Station and Manhattan transfer closed. http://www.northeast.railfan.net/classic/NYCity4.html
It looks a lot like today, except for the H&M going off the top to Park Place, presumably. Note the westbound H&M crosses under PRR main to New York already, east of where the tracks to Jersey City split off
The other is a track map of Dock and Hudson Interlockings from 1967 which includes the same area (and note the chart says installed in 1910 - so it goes back to Manhattan Transfer days) https://www.redoveryellow.com/position- ... s/dock.gif
It looks very similar to the pre-1937 chart above, except for the H&M west of the Manhattan Transfer area of course. It's easy to see that after 1937 they just kept the westbound H&M on the north side of the PRR tracks east of Manhattan Transfer all the way to the flyover at Dock Bridge - so I'm convinced now that the flyover was put in back when Dock bridge opened and the H&M first went to Newark Penn Station, not later.
And poking around, it seems that there were only 2 passenger tracks between Manhattan Transfer (and later Newark Penn) to Jersey City, as I think one of you pointed out.
I'll have to get one of those old Triumph books about the H&M.
One other (for Ken) - it seems as of 1930 the Newark subway was not there yet - the Morris Canal on the 1930 photo looks overgrown and there is no Raymond Blvd on top of it. I guess the subway didn't come until the new Newark Penn Station a few years later. Also I found interesting the "City Market" (so I saw it named on old Sanborn maps) a few blocks east of the CNJ freight warehouse. What's interesting is what looks like a brand new parking lot with lighting -- the beginning of the NJ malls with big parking lots, perhaps.
On that note, I was never at the Two Guys in Harrison, but I do remember trips to other Two Guys (and Korvettes) in the early 60's, I guess. https://pleasantfamilyshopping.blogspot ... -guys.html