 Past this interchange, the eight-lane freeway continues between marshland in the John Heinz National Wildlife Refuge at Tinicum to the north and developed areas to the south.I-95 heads north of an office park before it comes to a northbound ramp that connects to eastbound PA 291.Past this, the freeway comes to a bridge over Conrail Shared Assets Operations' Chester Secondary and PA 291 (Bartram Avenue).