From the south apex of the wye at GCL Junction (MP 766.6), the main line curves around to the northeast, single track, CTC, speed restricted to 20 mph, past a dragging equipment detector at MP 766.4, the north apex of the wye at Wall Street/Beaumont/SP Crossing (SP MP 278.0/KCS MP 766.0), where the SP Sunset Route trails in from the west, and the line continues, past two grade crossings, a bridge over a main street below, a grade crossing, the civic center on the east side, and a grade crossing.
There is a flat crossing with a local line, with connectors in the west and north quadrants and a Tower on the west side, at Neches River (SP MP 278.1/KCS MP 765.9), a bridge over a line on the south bank to a harbor to the east, and a through truss bridge (15 mph on the bridge) over the Neches River (KCS MP 765.8), a spur heads off to the southeast, a grade crossing, the spur trails back in on the east side, Tower 31 (SP MP 277.0/KCS MP 765.0), where the Kansas City Southern line continues straight ahead, and the Sunset Route turns east-northeast, and a "KCS" detector at "MP 276.2" (KCS MP 764.9).