Great shot! btw, 4666 just returned to passenger service at BR&W.
Until the line between Whitings and Bay Head opened in 1881 or so, all Philadelphia - Long Branch trains ran via the F&JARR. Plus Trenton - Long branch trains.
To give you an idea of the traffic in bygone years, Pennsy investigated double-tracking the Freehold & Jamesburg all the way to Sea Girt. I'm assuming things ran by timetable authority. There were a few passing sidings I remember. Freehold had two (?), there was one at Allaire, one at Allenwood, and one at Sea Girt. Sea Girt also had two yards and a two-track interchange yard. Except for SG Tower in Sea Girt, I don't recall any other towers. Farmingdale was busy enough to have a passing siding for Pennsy, part of the leg of the wye was double-tracked, and had a two-track interchange yard.
The last major freight moves were in the early 60s when Pennsy ran jetty rock unit trains from Kingston to Lewis Lumber Company's yard in Spring Lake. Soon after that, the Doodlebug made its last run and the line closed between Sea Girt and Farmingdale. Last customer on that portion of the line was Monmouth Box in Allenwood, that got all of one boxcar a week at that point. The diamond crossing at Farmingdale remained in service for a coal trestle on Frequency Engineering's property for a few years.
Farmingdale station was a "union" station, located right at the CNJ/PRR diamond crossing, with platforms for each track.
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