I think it's really important that we push for a link from the new NPR line from Liverpool that connects to the WCML going North (6 miles of new track from Rainhill Stoops to Winwick), to enable high speed Liverpool Lime Street to Glasgow Central & Edinburgh Waverley services to operate on that line. This is a pretty smooth alignment below which would allow for a high speed connection.
A new NPR connection west of Warrington Bank Quay to the Runcorn East line to Chester, Llandudno & Holyhead is also very important.
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With regard to the Liverpool end, specifically the new plans for Liverpool Central, I see 2 options but there's no reason why both can't be adopted.
OPTION 1
We build a new Liverpool Central High Level terminating station on the footprint of the old high level station, which will have room for 5No new platforms to free up capacity at Lime Street for more long distance services.
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Platforms 1 - 4 at the new Liverpool Central High Level station would have a maximum platform length of approx. 175m, with Platform 5 a maximum length of approx. 155m.
This would give Liverpool Lime Street and Liverpool Central a combined total of 15No mainline platforms (connected by a 300m tunnel), with medium distance services from Blackpool North, Manchester Airport, Manchester Oxford Road, Stalybridge & Wigan North Western all terminating at Liverpool Central.
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The new tunnel portal at the mouth of Liverpool Central would naturally be here.
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With a new double track, single bore tunnel heading east towards Edge Hill
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With the Eastern Portal of the new tunnel to Liverpool Central coming out here to join the CLC and Chat Moss lines, with two new platforms at Edge Hill (Platforms 5 & 6).
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OPTION 2
We redevelop Liverpool Central Low Level and create a new cross river route on the underground network.
Westbound services could use the existing 1830 Wapping Tunnel from Edge Hill, with a new section of tunnel introduced linking into the existing Edge Hill Spur tunnel portal south of Liverpool Central. Westbound services would then use the Paradise Street Junction stock exchange tunnel to carry onto James Street Platform 2, which would become a westbound platform on the new cross-river route.
For Eastbound services, a brand new new single bore tunnel could be introduced from the existing single bore tube from James Street Platform 1 to a new single tube platform at Liverpool Central (like the Wirral line platforms), carrying on east all the way towards Edge Hill, with a new eastbound single tube platform at Falkner Street station.
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Looking at the Cavendish Cutting below, Westbound services would use the centre 1830 Wapping Tunnel, with the new westbound station platform at Falkner Street located inside the Wapping Tunnel itself (as it is wide enough for a double track). The new single bore Eastbound tube would be connected to the western end of the existing 1829 Crown Street Tunnel (eastern end is right hand portal below)
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This option would mean direct semi-fast services from Manchester Airport and Blackpool North could continue through Liverpool Central and over to the Wirral.
But there's no reason why
BOTH the options above couldn't be adopted.
Increasing mainline platform capacity in Liverpool City Centre to 15 platforms would free up capacity at Lime Street for new regular long distance services to Glasgow Central, Edinburgh, Cardiff, Bournemouth & Holyhead; with room for a second service to London Euston as well as all NPR services.
Introducing a new cross-river line would have its obvious benefits too, allowing for new thru-services from West Kirby to Huyton and Hooton to Liverpool South Parkway; as well as hourly semi-fast services from Chester to Blackpool North & Manchester Airport via Liverpool Central, which could be done by re-4-tracking the line from Hooton to Rock Ferry.
It currently takes 45 minutes to travel 15 stops from Liverpool Central to Chester on the Wirral Line. What if this could be done in 7 stops taking 22 minutes!? Think what that can do for the local economy. Implementing this would see a fast service from Liverpool Central to Chester every 30 minutes.
Creating a new fast line from Liverpool to Chester, slashing journey times by half is just as important in the grand scheme of things as Northern Powerhouse Rail and should be included as part of this levelling up strategy.
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