The earliest plans for Pine Creek at Allaire included a line next to the then-existing PRR trackage. The bridge just east of today's Pine Creek, used as an exit road for the third parking lot, was built two tracks wide (a passing siding existed long ago), plenty of room for Pine Creek and the PRR to share. The plan was to build eastward to about where the golf course property started, with a reversing loop built on a trestle. Big plans for those days. Look at an old brochure, that track plan is on it.
When the PRR was abandoned and torn up, Pine Creek continued to look into to acquiring the whole ROW. It never worked out, obviously. Some years later the ROW was used for a 36-inch water main. Concrete pipe sections were placed and later buried. One picture somewhere shows Pine Creek's diesel #5 and the four-wheel caboose parked so the shot looks like a long freight train of the pipes.
The line from Sea Girt to Farmingdale was used in 1946 after both the Barnegat and Matawan trestles burned and a detour route was needed. Both CNJ and PRR trains used the NY&LB south to Sea Girt. Pennsy trains continued on to Jamesburg and then north to South Amboy. CNJ trains ran to either Farmingdale or Freehold and then north on their rails back to the NY&LB. The Southern Div was also used from Red Bank to Farmingdale by PRR trains as needed. The two lines cooperated during the emergency and things ran as well as could be expected. CNJ and PRR trains also ran on the NY&LB to Matawan, and passengers were bussed around the Matawan trestle to South Amboy. It was a mess but they did what they had to. (No info exists whether trains used the CNJ line from Long Branch / Branchport to Eatontown).
That could never happen today, there aren't ways to detour around problems like that.
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