The project involved the replacement of four bridges on the Gospel Oak to Barking railway line over three weekends, during 50hr possessions of the railway. The project is part of a wider scheme by Network Rail to ensure railway infrastructure is upgraded to suit current traffic loadings. The Gospel Oak to Barking line is heavily used by freight as well as passenger trains, so it was deemed appropriate to replace the 120 year old bridges.
All four of the bridges are located over narrow residential streets, which meant carefully planning on the size of the equipment and how it could be used. A 500 tonne crane was utilised for each bridge in very specific positions to ensure the work could be carried out without risking damage to the surrounding environment.