The Wynyard Walk is a 180-metre-long (590 ft) pedestrian link and tunnel between Wynyard station and Barangaroo in the Sydney central business district. The walkway was officially opened on 20 September 2016. Wynyard Walk provides a quick and safe route and has increased the entry and exit capacity of Wynyard station to meet demand as Barangaroo is redeveloped. An estimated 20,000 pedestrians per hour can walk through the tunnel. In 2009, prior to construction of Barangaroo, the pedestrian tunnel was estimated to cost $100 million.