WestConnex is a 33-kilometre (21 mi) predominantly underground motorway scheme in Sydney, New South Wales, Australia. A joint project of the New South Wales and Federal governments, the motorway scheme created around 26 kilometres (16 mi) of new tunnels between Homebush and Kingsgrove, passing underneath Inner West suburbs including Haberfield and St Peters. The first of the tunnels, the M4 East, opened to traffic in July 2019. The second of the tunnels, the M8 Motorway, opened to traffic a year later in July 2020. The third of the tunnels which extend the M4 and M8 opened to traffic in January 2023. The final component of the scheme, the Rozelle Interchange, opened to traffic in November 2023.

St Peters is a suburb in the Inner West of Sydney, in the state of New South Wales, Australia. It is 7 kilometres south of the Sydney central business district, in the local government area of Inner West Council, with a small section in the southeast in the City of Sydney.