Works are now underway across all four major construction sites to prepare for the start of tunnelling. At Forrestfield, our busiest site, excavation of the dive structure is progressing well and in the coming weeks will reach a depth of 14m.
Works are underway to ensure key support infrastructure is in place and ready for the first TBM to begin tunnelling in July this year. However, before the TBMs can start digging the 8kms of tunnels, they each need a name.
With the arrival of the tunnel boring machines and all four major construction sites becoming operational in 2017, this year will be our busiest yet.
This year has seen the project shift into construction phase, with SI-NRW awarded the major design and construct contract in April and starting construction works in November.
The development application for Early Works at Forrestfield was approved this month and as a result preparation for the construction of key infrastructure has now started.