floorway

plural floorways

1. An elevated section of floor over which one can walk.

   This afforded direct access to the 'garden crossing' (tōriniwa) and the central courtyard of the garden without having to pass via the raised floorway of the house.

   2013, Nicolas Fieve, Paul Waley, Japanese Capitals in Historical Perspective

   2 more examples

   […] a portion of the northern roadway of the bridge, measuring 70x30 feet, was entirely detached from its supporting cable and was only held up by the indirect support which it derived from the adjoining floorway.

   1901, Scientific American, volumes 84-85, page 74

   […] a helical floorway supported on horizontal beams each having one end fixed to said skirt structure and the other end cantilevered over one of said outwardly spaced columns, said floorway extending upwardly […]

   1966, Official Gazette of the United States Patent Office