A bi-level aluminum vehicle carrier railcar (10) includes an integrated aluminum roofing structure (30), aluminum side panels (18, 20), and aluminum decking structure (36, 50) attached to a steel underframe. The decking structure (36, 50) is supported on side stakes (18) of the side panels (18, 20) with the decking structure (36, 50) including overlapping extruded aluminum decking plates with (38, 52) anti-skid features. The anti-skid features include a media blasted finish to a portion of the surface of the decking and extruded ribs (64) in a portion of the decking. The roofing structure (30) includes overlapping, arched corrugated aluminum panels (30), wherein the roof panels (30) remain uncoated.