Gresham to Blue Island (Main Line)

From the Metra station (asphalt island, facilities below) at Gresham (MP 9.8), passing a bridge over an east-west street, a street alongside to the west, signals and crossovers, and the double-track junction between the main and branch (Beverly) lines at Gresham Junction Tower (MP 9.9), the double-track main line continues south-southwest, past a line curving away on the east side (to the line currently on the route of that B&OCT line, from South Chicago Yard), the former location of a double-track flat crossing with the erstwhile B&OCT east-west line through this location, and a line trailing in from the east (from the line currently on the route of that B&OCT line, from South Chicago Yard, making a wye at that location), past a signal bridge overhead, crossovers, signals, and a street alongside to the west.

Gresham Yard lies on the east side of the line, followed by three grade crossings, a closed grade crossing, four grade crossings, a Metra station (two side platforms) at 95th Street/Longwood (MP 10.9), the street to the west moves away, two grade crossings, a closed station at 99th Street, I-57 and a frontage street alongside to the east, a new street alongside to the west, a Metra station (two side platforms) at 103rd Street/Washington Heights (MP 12.0), the former crossing with the erstwhile PRR Panhandle line (northwest to southeast), a closed station at Givins, Intermediate Signals at MP 13.4, extra track on the east side, a grade crossing, extra track on the west side, then two extra tracks becoming the north end of the yard, and a closed station at Morgan Avenue.

At Purington (MP 14.4), the line reaches the south end of Burr Oak Yard (yard tracks on the west side of the main line, between the main line and the branch), where the branch line reappears on the west side, passing a road bridge overhead, a road alongside to the east, the Metra Electric Blue Island station across that street, and the grade crossing at Vermont Street, to the Metra station at Blue Island Vermont Street (MP 15.7), platforms on the east side of the branch and the west side of the main line, brick depot between them, where the branch trails back into the Joliet main line at the south end of the station.