Norwegian rail infrastructure operator Bane Nor has said that work to stabilise ground below a road junction in the Bispegata district of Oslo has been completed.
Subsidence in the area was caused by excavations of crossover passages between a 600m long concrete lined tunnels being built for the Follo Line project.
The ground movement was first noted in early February and was beyond the predicted movement in the area. Bane Nor has said that the work was carried out to recognised standards but ground conditions in the area were more demanding than expected.
Work in the excavation at Bispegata was halted after ground movement was first seen on 8 February and work was halted and the site evacuated. Bane Nor undertook round the clock monitoring but determined that the movement was limited to the site around the excavation and instructed the contractor to undertake stabilisation work.
Bane Nor has said that the stabilisation work has now been completed and damaged road surfaces have been repaired to allow the junction to reopen.
Investigations into the cause of the ground movement are continuing.