Trains over the Plessey Viaduct have returned to normal after urgent repairs were completed to the viaduct, which is near Morpeth.
Engineers have repaired the parapet damage, which was found during planned engineering work in October.
Concrete units were installed and steel underpinning has been carried out.
Storm Babet didnt stop the teams working, as new ways of working were found to make sure the work was delivered safely and on time.
Paul Rutter, Route Director for Network Rail's East Coast route, said: “We want to thank passengers for their patience and understanding while we have carried out this urgent and vital repair work on Plessey Viaduct.
“Our teams have worked around the clock to fix the viaduct and allow trains to return to a normal service on the East Coast Main Line, battling the adverse weather that Storm Babet delivered.
“We are sorry for the disruption that this damage has caused, but our work at Plessey Viaduct will deliver safer and more reliable journeys for all our passengers.
