[3] Under a 7-year agreement from 2023 onwards, the tunnel is branded as Westpac Walk for sponsorship reasons.

In early 2014, construction at the Western Portal was put on hold to allow archaeologists to work on the site to preserve significant European and indigenous artefacts unearthed during excavation.

It provided a route onto the Napoleon Bridge directly into Barangaroo from Westpac Place behind the Sussex Hotel.

While some construction of the Clarence Street entrance and minor finishes on Wynyard Walk continued until late 2016,[2][7] the tunnel is open 24 hours per day.

The thoroughfare to George Street was rebuilt as part of the Wynyard Place development.