It will also involve the closure of some of Yorkshire's busiest roads and motorway junctions. This is a roundup of how each part of Yorkshire will be most affected by the years of demolition and construction work set to begin in the mid-2020s.
5. Warmfield to Swillington and Woodlesford
6. Barnsley & Wakefield
7. Rotherham and Mexborough
8. Garforth and Church Fenton