Almost a mile of track has been replaced on the approach to London Liverpool Street in order to provide a more reliable service to passengers.
Engineers working in the Bishopsgate tunnel carried out the track renewal over six weekends to replace old track.
Track was replaced, alongside installing new rail sleepers and ballast.
A section of platform 1 at London Liverpool Street was used to store all the necessary equipment for the duration of the works.
What did the officials say?
Mick Cooper, project manager for Anglia, said:
“The project presented many challenges, most notably working in the third busiest railway station in the country, and keeping as many passengers moving as possible.
“The condition of the track meant there was risk of track circuit failures due to flooding if the work was not carried out, and we were able to carry out most of the work while keeping trains running.
“Now that the work is complete, I hope this provides passengers with a more reliable service for many years to come.”