Knapsack Viaduct Viaduct Sandstone railway viaduct across Jamison Creek, Lapstone. Locate -33.758908290437, 150.64016479955 Position Designer Whitton, John {"name":"Designer","target":"Whitton, John","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null} Type Viaduct {"name":"Viaduct","target":"","target_text":null,"date":{"#markup":"<span class='date'><\/span>"},"date_start":null,"date_end":null}