Final invert pour: Complete - Spark North East Link Tunnels D&C North East Link continues to make strong progress with the Sequential Excavation Method (SEM) tunnelling works, reaching a major milestone following the completion of the 58th and final invert pour. This achievement marks the completion of one of the three major structures forming the SEM tunnel lining.

Since the first invert was cast in September last year, the team has delivered 118 permanent lining pours, placed more than 21,000m³ of concrete and installed close to 5,000 tonnes of reinforcement.

Forming the base of the tunnel, the inverts will be covered by backfill and connected to the top of the kickers (the lower wall structures along each side of the tunnel), enabling construction of the road base layers. Tunnel kicker walls continue to be poured throughout the alignment ahead of the arch pours, with both major tunnel structures scheduled for completion in the coming months.

Webuild, as part of the Spark Joint Venture, is delivering North East Link. The project will take 15,000 trucks off local roads every day and reduce travel times by up to 35 minutes for commuters. Once complete, it will be the longest road tunnel in Victoria. Learn more about the project here.

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