Originally built by the Port Reading Railroad and part of the Reading Company system, today the line belongs to Conrail Shared Assets Operations (CSAO).

From there it proceeds east to Port Reading, New Jersey, on the Arthur Kill.

The line connects with the Chemical Coast Secondary in Port Reading, just short of the yard there.

[1] The Port Reading Railroad was founded in 1890 by the Philadelphia and Reading Railroad to build a line east from the existing New York Branch to a point on the Atlantic coast, where it would establish a new port.

The western end connected with the New York Branch at Port Reading Junction in Manville, New Jersey, on the west side of the Raritan River.