Pre-assembled collapsible walkway

A pre-assembled walkway with two lengthwise sides and two widthwise sides, comprising:

• an elongated walkway pan with two pan lengthwise sides and two pan widthwise sides;
• a side railing subassembly, comprising:
• a plurality of vertical supports;
• and
• handrails secured to tops of the vertical supports;
• a plurality of mounting brackets pivotally connecting the side railing subassembly to the walkway pan, whereby the walkway is in a collapsed position when the side railing subassembly is pivoted in a first direction to the walkway pan with the vertical supports substantially parallel to the walkway pan and is in an erect position when the side railing subassembly is pivoted in a second, opposite direction with the vertical supports substantially orthogonal to the walkway pan;
• at least one removable toe board fastened to one of the pan lengthwise sides of the walkway pan;
• and
• removable cross-braces fastened between the handrails and the walkway pan on both lengthwise sides of the preassembled walkway,
• wherein the pre-assembled walkway is collapsible upon removal of the cross-braces and the at least one toe board.