Cleveland Institution of Engineers. TT2 Limited. Here 2 Deliver for You!. New Tyne Crossing THE SECOND TYNE TUNNEL 19 October 2010. Andrew Coapes TT2 Technical Manager. Presentation History and Project Development Contractual Matters The Works, Project Elements. Location Plan.
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Cleveland Institution of Engineers TT2 Limited Here 2 Deliver for You! New Tyne Crossing THE SECOND TYNE TUNNEL 19 October 2010
Andrew Coapes TT2 Technical Manager
Presentation • History and Project Development • Contractual Matters • The Works, Project Elements
Cross Tyne Study 2-1992 • Study reviewed 4 alignments, • St. Lawrence, St Anthony’s, Walker & St Bede
Feasibility Study Conclusions • Examine alternative means of construct at St Bedes, bridges, bored and immersed tube tunnel. • Conclusion two lane immersed tube tunnel was best. • Suggested that the project was viable for promotion under the PFI
CROSSING OPTIONS • BRIDGE • BORED TUNNEL • IMMERSED TUNNEL
WHY NOT A BRIDGE? “BONGA” FPSO LEAVING THE TYNE 19.10.03
BORED TUNNEL • Longer • More expensive • Variable ground risk
RIVER ENVIRONMENT RIVER TYNE BEST SALMON RIVER IN ENGLAND AND WALES A DESIGNATED “INDEX RIVER”
Contractual Scheme SHAREHOLDERS HBOS 41% HSBC 41% BYTP 18% Shareholders Agreement TT2 Holdings Co Ltd 100% Project Agreement D&C Agreement GRANTOR CONTRACTOR BYTP UK TWITA Credit Agreement LENDERS (after syndication) HBOS 14% HSBC 10% Natixis 14% BBVA 12% IKB 6% BNG 13% BTMU 12% Co-op 4% Barclays 15% DESIGNERS SUBCONTRACTORS HPR / PB / FM Volker Stevin Halcrow Bachy …… Fairhurst Jan De Nul …… ………… ……
Project Agreement THIS AGREEMENT (this "Agreement") is made the 23rd day of November 2007
Project Agreement Objectives (i) building and operating a new tunnelto conform to current safety requirements and refurbishing and operating the existing tunnels to best practice consistent with their construction and listed status; (ii) facilitating the amicable transfer of Transferring Employees to the Concessionaire; (iii) minimising the actual toll level charged to users – including maintaining the current zero VAT rating; (iv) promoting public transport, cycle and pedestrian use of the Existing Tunnels and New Tunnel; (v) procuring the New Tunnel without the need to seek Government PFI Credits or other public sector financial support; (vi) minimising the environmental and social impact of the New Tunnel on local residents and businesses, both during construction and operation; (vii) protecting and promoting the ecology of the Tyne and its tributaries as an important element of the region's environment; (viii) minimising disruption to the operation of the Existing Tunnels during construction; (ix) minimise disruption to the movement of river traffic and the operation of riverside businesses; (x) incentivising the Concessionaire to complete the construction processes as soon as practicable; (xi) allowing flexibility in the Contract Period to facilitate the above objectives; (xii) supporting the Port of Tyne Authority as the road, rail and marine freight hub for the North East region; and (xiii) pro-actively communicating and liaising with all affected authorities, agencies, land owners and communities to foster good relations and understanding of the project and the TWPTA's objective.
How does it work financially? Money in Loans from Bank Revenue from tolls = 2 tunnels Revenue from Tolls = 1 tunnel` 4 years of construction and 30 years of operation TT2 operating and maintenance costs TT2 operating and maintenance costs Tunnel Construction and refurb Repayment of Loans + interest Money out
Delivery Challenges Planning conditions River Tyne (Tunnels) Order 2005 Code of Construction Practice Urban environment Traffic using existing tunnel Consultation with Stakeholders Notification Dialogue Engagement • Strategic partnering forum • Approvals and consents workshops • Public consultation – trust in outcomes • Community involvement • public art; good neighbour fund • Local partnering forums • Newsletter • Activity diaries • Leaflets • Website • Twitter • Email bulletins • VMS • Media • Drop-in sessions • Displays and exhibitions • 24 hour helpline • TT2 patrol support • Councillor briefings • Site tours and presentations
Overview of Construction Contract • Contract Duration, commence early 2008 - complete by 2012 • Stage 1: Construction of New Tunnel • Stage 2: Refurbishment of Existing Tunnel • Estimated number of operatives will peak at 500, over 3,000 in total • 400m River • 1,500m Tunnel • 2,650m Project • 80+ Direct Subcontractors • 20+ Direct Consultants • 6,000 drawings (to date) • 910,000 m3 Earth Moving
Project Route Toll Plaza and North Cut & Cover River Section South Cut & Cover South Junction M&E Works River Tyne Howdon Jarrow Northbound 3.1 km, Southbound 2.6 km
Cross OverExisting Tunnel Types of Construction SCL South Portal(Contiguous Piles) North Cut & Cover(D-Walls) Immersed Tunnel South Cut & Cover(D-Walls) South Portal(Box Section) South Portal 2
Project Elements Immersed Units Cut & Cover Cross-over Section SCL Dredging Placing and finishing the Units South Complex Junction Highways North & Toll Booths M & E Services Refurbish Existing Tunnel
Cut & Cover Technique • Install diaphragm walls • Excavate and install props. • Construct floor slab. • Construct tunnel internal walls • Construct tunnel roof. • Backfill over and remove props. Achieved