Special thanks to Joe Sharretts for the pictures and information on this line.
The abandoned track in Brandywine State Park just before the crossing of Van Buren Avenue.
This track was put in place in about 1882, and started in Landreth, DE, switching off the main PRR line there. There was about a mile of street track at that point, after which it broke off from the streets and went through Brandywine State Park, finally ending at some local mills at Augustine cut-off (Wilmington, DE) - 3.14 miles total length. It was used until Conrail abandoned the line in the late 1970s or early 1980s.
Most of the street track was simply paved over. The section in Brandywine State Park is still intact except for grade crossings and about 1/4 mile of track that was removed for a hiking trail.
Grade crossing in Brandywine State Park.
The two shots above show a oil car that still sits on the track just past the park. It is essentially stranded on the intact part of the line. It has been used as a unique billboard for condominiums (probably why it was placed there in the first place).