The final 4m of blasting were achieved last week, marking completion of the tunnel connecting Hagastaden and Arenastaden as part of the network’s expansion.
Itinera says the event was a milestone of major technical and logistical significance.
“The service tunnel is in fact a key element for the start of the subsequent construction phases, and the completion of this stage is the result of the high level of expertise of the teams involved in the underground works, operating in a complex urban environment and in compliance with stringent safety and sustainability requirements,” the company says.
The expansion will add 30km of track and 18 stations to Stockholm’s metro network. It is the largest investment in the Swedish capital’s public transport for 50 years and will provide new Blue Line routes from Akalla-Barkarby and Kungsträdgården–Nacka and Söderort; a new Green Line connection from Odenplan-Arenastade; and construction of the entirely new Yellow Line from Fridhemsplan- Älvsjö.
Procurement for the Yellow Line tunnelling contract is expected to be launched early this year.
