EIR Request Wapping Tunnel Feasibility Study Reference RSN16726 Request Stage Request Date Received 07/12/2017 Date Responded 22/12/2017 Disclosure Full Exemptions / Exceptions N/A Supporting Documents City Line to Northern Line Connection Feasibility Study The information supplied continues to be protected by copyright. You are free to use it for your own purposes, including for private study and non-commercial research and for any other purpose authorised by an exception in current copyright law. Documents (except photographs) can also be used in the UK without requiring permission for the purposes of news reporting. Any other reuse, for example, commercial publication would require the permission of the copyright holder. G:\FOI\Request Disclosure Logs\2017-18\12 December 2017 Responses Request I would like to make a request under the Freedom of Information Act 2000. It concerns the initial feasibility report carried out to review the potential of bringing the Wapping Tunnel back into use for passenger services. I would like to see this report. Response Thank you for your recent request, which has been processed in accordance with the Environmental Information Regulations 2004. Please find attached a copy of the City Line to Northern Line Connection Feasibility Study completed by Mott MacDonald. Please note the copyright disclaimer at the foot of this email regarding the allowed reuse of this information. I trust that this information is of interest to you. If you are dissatisfied with the handling of your request, you have the right to ask for an internal review, which should be addressed to: Mrs Julie Watling Legal, Democratic Services & Procurement Manager Merseytravel PO Box 1976 Liverpool L69 3HN [email protected] If you are not content with the result of your internal review, you also have the right to complain to the Information Commissioner, whose address is The Information Commissioner’s Office, Wycliffe House, Water Lane, Wilmslow, Cheshire SK9 5AF www.ico.gov.uk G:\FOI\Request Disclosure Logs\2017-18\12 December 2017 Responses City Line to Northern Line Connection Feasibility Study Desktop Study of Existing Information 361557-WTD-MCH-003-A May 2016 Merseytravel City Line to Northern Line Connection Feasibility Study 361557 WTD MCH 003 A C:\Users\lew65619\Documents\Mott MacDonald Report Template.docx May 2016 Desktop Study of Existing Information City Line to Northern Line Connection Feasibility Study Desktop Study of Existing Information 361557-WTD-MCH-003-AMay 2016 Merseytravel No. 1 Mann Island Liverpool L3 1BP Mott MacDonald, Spring Bank House, 33 Stamford Street, Altrincham, WA14 1ES United Kingdom T +44 (0)161 926 4000 F +44 (0)161 926 4100 W www.mottmac.com City Line to Northern Line Connection Feasibility Study Desktop Study of Existing Information Contents Chapter Title Page Executive Summary i 1 Introduction 1 1.1 Introduction ________________________________________________________________________ 1 1.2 Scheme Context ____________________________________________________________________ 1 1.3 City Line and Northern Line ___________________________________________________________ 2 1.4 Wapping Tunnel ____________________________________________________________________ 3 1.5 Cavendish Cutting __________________________________________________________________ 3 2 Existing Information 4 2.1 Historic ___________________________________________________________________________ 4 2.2 Contemporary ______________________________________________________________________ 4 3 Transport Planning 5 3.1 Introduction ________________________________________________________________________ 5 3.2 Station Capacity and Demand _________________________________________________________ 8 3.2.1 Liverpool Central ___________________________________________________________________ 8 3.2.2 Liverpool Lime Street ________________________________________________________________ 8 3.2.3 University Station ___________________________________________________________________ 9 4 Operational Planning 10 4.1 Introduction _______________________________________________________________________ 10 4.2 Liverpool Central __________________________________________________________________ 10 4.3 Edge Hill _________________________________________________________________________ 10 4.4 New station _______________________________________________________________________ 12 5 Permanent Way 13 5.1 Gauge and Clearance ______________________________________________________________ 13 5.2 Speed ___________________________________________________________________________ 13 5.3 Geometric and Kinematic Constraints __________________________________________________ 13 5.4 Vertical Alignment__________________________________________________________________ 14 5.5 Materials _________________________________________________________________________ 15 6 Tunnelling 16 6.1 Wapping Tunnel ___________________________________________________________________ 16 6.2 Cheshire Lines Committee Tunnel (Northern Line) ________________________________________ 16 6.3 Restrictions on constructing new tunnels linking the Northern Line with Wapping Tunnel ___________ 17 7 Existing Infrastructure 20 361557/WTD/MCH/003/A May 2016 City Line to Northern Line Connection Feasibility Study Desktop Study of Existing Information 7.1 Structural Considerations ____________________________________________________________ 20 7.1.1 Wapping Tunnel ___________________________________________________________________ 20 7.1.2 Cavendish Cutting _________________________________________________________________ 23 7.2 Historical Considerations ____________________________________________________________ 23 7.3 Potential Station Location ____________________________________________________________ 24 7.3.1 Catherine Street ___________________________________________________________________ 25 7.3.2 Crown Street _____________________________________________________________________ 27 7.3.3 Cavendish Cutting _________________________________________________________________ 29 7.3.4 Edge Hill Station ___________________________________________________________________ 32 8 Signalling 34 8.1 Liverpool Central __________________________________________________________________ 34 8.2 Edge Hill _________________________________________________________________________ 34 8.3 Signalling Restrictions ______________________________________________________________ 34 8.4 Summary ________________________________________________________________________ 35 9 Telecommunications 36 9.1 Required Telecommunications ________________________________________________________ 36 10 Electrical and Plant 38 10.1 Introduction _______________________________________________________________________ 38 10.2 Signalling Power ___________________________________________________________________ 38 10.2.1 Edge Hill SSP _____________________________________________________________________ 38 10.2.2 Edge Hill ASP _____________________________________________________________________ 38 10.2.3 Central SSP ______________________________________________________________________ 39 10.2.4 Existing 650V Feeders ______________________________________________________________ 39 10.2.5 Signalling Power Summary __________________________________________________________ 39 10.3 Points Heating ____________________________________________________________________ 40 10.3.1 Edge Hill _________________________________________________________________________ 40 10.3.2 Wapping Tunnel connection to Northern Line ____________________________________________ 40 10.4 Conclusion _______________________________________________________________________ 40 11 Electrification – 3rd Rail DC & AC 42 11.1 Introduction _______________________________________________________________________ 42 11.2 Northern Line _____________________________________________________________________ 42 11.3 City Line _________________________________________________________________________ 42 11.4 AC/DC Interface ___________________________________________________________________ 43 11.5 Summary ________________________________________________________________________ 44 12 Summary 45 13 Appendix A – Source Information 49 361557/WTD/MCH/003/A May 2016 City Line to Northern Line Connection Feasibility Study Desktop Study of Existing Information Executive Summary Mott MacDonald has been commissioned by Merseytravel to undertake a high level feasibility study for a possible new connection between the City Line and Northern Line in Liverpool by utilising currently unused existing infrastructure. This report provides a summary of a desktop review of the available engineering information and potential scheme constraints for a new rail link between Liverpool Central and Edge Hill Stations via Wapping Tunnel. The report has been divided into the various engineering disciplines that are required to contribute to the multi-disciplinary scheme. The report, including the Index of Reference Documents listed in Appendix A, is to be used as a point of reference for the remainder of this feasibility study and subsequent scheme development stages. The report shall also be used to assist in agreeing with Merseytravel the optimum alignments and arrangements to be studied in further detail as part of this commission. The report highlights the complexity of the proposed scheme with a number of multi-disciplinary challenges to be addressed. At this preliminary desktop stage, the report has