@RobertRocheFollowing up on my brief comments on FB --
I'd certainly be interested in at least one or two. Thank you for all your design labor and effort; wonderful talent. I wish I could learn this wonderful skill you possess.
Perhaps you might consider how such an intricate structure could be easily harmed in shipment or handling. You might want to consider interchangeability for variations, too. Maybe consider these suggestions:
-- separate the legs and their upper connecting frame (below the deck) into one piece;
-- maybe curve the handrails and latticework for the crosswalk structure above the upper landings;
-- separate the stairway structures so that they can mount on the legs and square leg frames;
-- print the crosswalk either as one longer length, or as two halves that can be joined in the middle with narrow reinforcing, intersecting plates.
-- consider adding an insertable straight crosswalk section, to allow the different configurations that @Westcorkrailwayshowed in the posted photos.
With interchangeable segments of legs, stairs, and crosswalk, you might expand your potential buyers. Wonderful, admirable work.