The specific creation date for "Legend of the Inca Bridge" cannot be determined from available reference materials. This title may refer to:
The Inca Empire (1438–1533) built an extraordinary network of q'eswachaka (woven grass suspension bridges) and stone bridges across the Andes. The last living example, the Q'eswachaka Bridge over the Apurímac River near Cusco, Peru, is rebuilt annually in a communal ceremony by local Quechua communities—a 600+ year continuous tradition. UNESCO recognized this intangible cultural heritage in 2013.
If "Legend of the Inca Bridge" refers to a specific modern media production, its creation date would depend on the producer and release year. Without further identifying details (producer, format, year range), a precise date cannot be provided.
If you can provide more context, a precise answer may be possible.