It is over the 'discovery' of a new dumping site for the contaminated soil. As for the new expected date for the completion, it is not news.
https://www.afr.com/companies/infrastructure/transurban-s-west-gate-tunnel-pushed-back-to-2024-20210330-p57f6p
The Victorian government has signalled a breakthrough in its long-running dispute with Transurban over the $6.7 billion West Gate Tunnel project.
https://www.afr.com/companies/infrastructure/transurban-s-west-gate-tunnel-pushed-back-to-2024-20210330-p57f6p
Transurban’s West Gate Tunnel pushed back to 2024
www.afr.comThe Victorian government has signalled a breakthrough in its long-running dispute with Transurban over the $6.7 billion West Gate Tunnel project.