... The "Spine" appears to deliver freights to Nuneaton, North of the critical Rugby stretch, and to Bedford for the MML» , North of the Thameslink services. In effect the WCML▸ will have a pair of splints, to take the extra traffic. If sufficient slower traffic could be removed from (or not added to) the WCML...
But the 'electric spine' doesn't really remove any WCML traffic, two of us have already tried to explain this. What it does is remove conflicting traffic from the Coventry area.
From the Southampton direction, nearly all freight to the NW is currently routed up through Leamington/Coventry/Nuneaton. What they are talking about is diverting this route via Bletchley, ie to join the WCML earlier, thereby increasing the flow through the Milton Keynes/Northampton/Rugby section. If any flows from Southampton are sent via the MML to destinations such as Leeds, they will be services that don't currently affect the WCML anyway.
There is however a separate project to move freight to/from Felixstowe onto the cross country route to Nuneaton via Ely and Peterborough. (This route doesn't seem to be down for electrification however.) Also, and this is a significant issue, although this does theoretically remove freight from both the NLL and the WCML(S), this is only so that the existing paths can be used for new services from the new container port at Thames Gateway (Shellhaven).
Just to add a
PS, this is all covered in chapter 9 of the London and SE
RUS▸ , which concerns freight in the 'greater south east':
9.4.9 Capacity over the Nuneaton ^ Leamington Spa corridor therefore appears to be a potential barrier to future freight growth from Southampton, especially due to the crossing move at Nuneaton in the southbound direction. Interventions to address this issue may therefore be required in the future, as noted under Gap 8 of the Freight RUS.
9.4.10 One way discounted as a response to the constraints in 9.4.9 was for some Southampton traffic to run via London in normal operating circumstances, then onwards to the north via the WCML, Midland Main Line (MML) or East Coast Main Line (ECML▸ ). This would increase congestion on busy routes in and around the capital so has not been considered further, except for diversionary purposes (which would tend to take place at night or weekends when capacity for freight is significantly improved). It would also conflict with freight demand growth from other origins using the southern end of the WCML. The RUS therefore seeks an option which enables Southampton growth whilst both avoiding London (for traffic not serving that area) and the Coventry/Nuneaton/West Midlands constraints (for traffic not serving
such areas).
9.4.11 One potential approach would be to reopen the currently closed route from Bletchley towards Bicester (at Claydon Junction), as part of the third party promoted East-West Rail (EWR) scheme. Reopening of this line could potentially enable new routeing options for Southampton freight flows to the north, linking in to forecast demand (from Table 9.3) especially to Daventry in the West Midlands or the North West via the WCML.
The most immediate new routeing options would be:
~ Southampton ^ Oxford ^ Bletchley ^ WCML (for the Northwest)
~ Southampton ^ Oxford ^ Bletchley ^ Daventry (for the Daventry International Rail Freight Terminal).
Paul