STIP: Power Road – Rail
HOCHTIEF is delivering the demolition and replacement of four road-over-rail bridges in central London as part of TfL’s Structures and Tunnels Investment Portfolio (STIP). We are currently replacing Power Road Bridge, which carries the A406 North Circular over two Network Rail lines, phasing the works carefully to limit disruption to the London road and rail networks.
- Road-over-rail bridge demolition and construction
- Service bridge
- Temporary footbridge
- Complex utilities diversions
- Traffic Management
Working behind hoardings, we were able to safely complete piling works right next to the operational railway. Due to the proximity of the tracks, we used a specialist vibration-less piling rig to drive the sheet piles for the service bridge into the ground, continuously monitoring the railway to ensure its safety.
We adapted the bridge design to maximise offsite prefabrication, reducing time on site and enabling us to lift in structural elements during short rail possessions. The reinforced concrete bridge beams and parapets were precast offsite and lifted in during possessions, with the parapets cast integral with the outer edge beams so that the whole section could be lifted in at once. We also prefabricated the steel service bridge which houses the utilities that previously ran through the old bridge, installing it during a single night possession.
We successfully demolished the bridge in two phases during rail possessions over the August 2017 and Easter 2018 bank holidays, completing the demolition of the western side ahead of schedule, allowing us to hand back the tracks three hours early.
We won a Silver Considerate Constructors Scheme Award and a Beacon Award for outstanding health and safety performance. The final works on the bridge are due to be completed by summer 2019.