Multiple outlets report that about $32 million in additional works may be required after the Sydney Metro opening, creating a risk of further disruption to commuters on the M1 corridor. The concern is tied to the timing of construction activities following the ribbon-cutting for the final stage of the M1. Coverage says the works would ideally be completed during scheduled maintenance shutdowns, when services can be paused with planned communications. However, if contractors cannot finish the required tasks within those maintenance windows, construction could spill into periods when trains and roads are operating normally, leading to extra delays, disruptions, or service impacts for passengers.

The reports present the issue as a scheduling and operational planning challenge rather than a change to the overall project timeline. They also note the potential magnitude of the follow-on works, with the estimated cost put at $32 million, and frame the main risk as commuter disruption if the necessary construction cannot be accommodated within existing shutdown arrangements.