Tribune’s note

Minister for Infrastructure Catherine King marked a production milestone on the $15.4 billion River Torrens to Darlington (T2D) Project, announcing that 1,000 precast tunnel-lining segments have been completed at the Waterloo Corner facility in South Australia [TA-260517-infras-9dea002e2445:m00AMR]. The milestone is an early indicator of the scale ahead: the facility is contracted to produce more than 55,000 concrete segments in total, with peak output reaching up to 160 twelve-tonne segments per day.

The on-site concrete batch plant will supply 280,000 m³ of concrete — roughly 112 Olympic-size swimming pools' worth — and segments will be transported to tunnel-boring machines via battery-electric multi-service vehicles before installation by a specialised segment erector [TA-260517-infras-9dea002e2445:m00AMR]. The facility currently supports around 60 local jobs.

A workforce development dimension sits alongside the production announcement. A new nationally recognised Certificate III in Manufacturing Mineral Products (Precast) has been introduced specifically for the project, with over 60 workers already enrolled. King's framing positions the T2D Project not simply as a construction contract but as a vehicle for building durable local manufacturing and vocational training capacity — a pattern consistent with the government's broader infrastructure-delivery approach of anchoring large-scale projects to domestic industry and regional employment outcomes.

Primary records (1)

The official records this note draws on — the raw primary documents themselves, as published.

MediaConcrete progress as thousandth locally manufactured tunnel segment rolls off the lineCatherine KingSunday 17 May 2026