LINE Name Country City Regional Rail
Battersea UK London No
CONSTRUCTION DETAILS Start year End year Length (in km) Tunnel (in km) Tunnel Stations Source
2015 2021 3.2 3.2 100% 2 Media
COST INFORMATION Cost (in M) Currency PPP rate Year PPP Real cost (in M$) Cost/km (in M$) Source
1200.0 GBP 1.47 2017 1764 551.2 Media
REFERENCE http://www.cityam.com/257486/full-steam-ahead-tunnelling-12bn-northern-line-extension