Fornebubanen has chosen Implenia for tunnel and ground construction from Lysaker to Fornebu. The contract consists of planning and building a tunnel, including transverse sections, on a stretch of approximately 2.3 kilometers. In addition, construction pits and rock shafts will be established for Flytårnet station and Fornebuporten station. The contract has an estimated value of NOK 1.2 billion and marks the start of the tunnel work for Fornebubanen. Implenia was chosen for best offer as well as for meeting the contract's environmental and climate protection requirements. Fornebubanen recognized Implenia's implementation plan, its expertise in using BIM, as well as the response to the environmental and climate protection requirements. The contract signing will take place after a ten-day appeal period. The project start is planned in May 2021. Completion of the whole Fornebubanen project is scheduled for 2027, while the tunnel construction Lysaker – Fornebu is planned to be completed by autumn 2023.