Blackpool branch lines 2 miles of the M55 also occupy the former trackbed, until the Blackpool North line travels under the motorway at the point where the lines used to merge. The electrification of the Manchester to Blackpool North route was announced in December 2009. The main work of piling etc. to accomplish this commenced in early 2017. Bridgeworks along the route to raise and rebuild those that had insufficient clearance for overhead wires was completed first. Services over both the Blackpool South and Blackpool North branches temporarily ceased on 11 November 2017 to allow the track layout at Blackpool North and Kirkham
M6 motorway 1970, the Lancaster–Penrith link was completed, along with a short section of motorway by-passing the south of Walsall. The most northerly section of the motorway also opened in 1970, running to the designated terminus north of Carlisle. By 1971, the full route was completed between the junction with the M1 motorway at Rugby and the A38 road several miles north-east of Birmingham city centre, including Bromford Viaduct between Castle Bromwich (J5) and Gravelly Hill (J6), which at 3½ miles is the longest viaduct in Great Britain. Junction 6 in Birmingham is widely known as Spaghetti Junction because of its complexity