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Here 2 Deliver for You! TT2 Limited New Tyne Crossing THE SECOND TYNE TUNNEL 19 October 2010 Cleveland Institution of Engineers.

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Presentation on theme: "Here 2 Deliver for You! TT2 Limited New Tyne Crossing THE SECOND TYNE TUNNEL 19 October 2010 Cleveland Institution of Engineers."— Presentation transcript:

1 Here 2 Deliver for You! TT2 Limited New Tyne Crossing THE SECOND TYNE TUNNEL 19 October 2010 Cleveland Institution of Engineers

2 Andrew Coapes TT2 Technical Manager

3 Presentation – History and Project Development – Contractual Matters – The Works, Project Elements

4 Location Plan

5 Study reviewed 4 alignments, St. Lawrence, St Anthony’s, Walker & St Bede Cross Tyne Study

6 TRAFFIC THROUGH TUNNEL

7 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 Feasibility Study Conclusions

8 Tyne Tunnel Traffic

9 BRIDGE BORED TUNNEL IMMERSED TUNNEL CROSSING OPTIONS

10 “BONGA” FPSO LEAVING THE TYNE WHY NOT A BRIDGE?

11 Longer More expensive Variable ground risk BORED TUNNEL

12 EXISTING VEHICULAR TUNNEL: AIR LOCK CONTROL

13 GEOLOGICAL SECTION

14 RIVER ENVIRONMENT RIVER TYNE BEST SALMON RIVER IN ENGLAND AND WALES A DESIGNATED “INDEX RIVER”

15 IMPACT ON THE COMMUNITIES

16 Contractual Scheme SHAREHOLDERS HBOS 41% HBOS 41% HSBC 41% HSBC 41% TT2 Holdings Co Ltd LENDERS (after syndication) CONTRACTOR BYTP UK GRANTOR TWITA BYTP 18 % HBOS 14%HSBC 10%Natixis 14% BBVA 12%IKB 6% BNG 13% BTMU 12%Co-op 4% Barclays 15% HBOS 14%HSBC 10%Natixis 14% BBVA 12%IKB 6% BNG 13% BTMU 12%Co-op 4% Barclays 15% 100% Project AgreementD&C Agreement Credit Agreement Shareholders Agreement DESIGNERS HPR / PB / FM SUBCONTRACTORS Halcrow Fairhurst Volker Stevin Bachy Jan De Nul …… ………… ……

17 THIS AGREEMENT (this "Agreement") is made the 23rd day of November 2007 Project Agreement

18 Project Agreement Objectives (i) building and operating a new tunnel to 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.

19 4 years of construction and 30 years of operation Revenue from Tolls = 1 tunnel` Revenue from tolls = 2 tunnels TT2 operating and maintenance costs Tunnel Construction and refurb Loans from Bank Repayment of Loans + interest Money in Money out How does it work financially?

20 Delivery Challenges Planning conditions River Tyne (Tunnels) Order 2005 Code of Construction Practice Urban environment Traffic using existing tunnel Consultation with Stakeholders Dialogue Strategic partnering forum Approvals and consents workshops Public consultation – trust in outcomes Community involvement public art; good neighbour fund Local partnering forums Notification Newsletter Activity diaries Leaflets Website Twitter bulletins VMS Media Engagement Drop-in sessions Displays and exhibitions 24 hour helpline TT2 patrol support Councillor briefings Site tours and presentations

21 Overview of Construction Contract Contract Duration, commence early 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

22 Project Route South JunctionSouth Cut & CoverRiver Section Toll Plaza and North Cut & Cover HowdonJarrow River Tyne Northbound 3.1 km, Southbound 2.6 km M&E Works

23 North Cut & Cover (D-Walls) South Cut & Cover (D-Walls) South Portal (Box Section) Immersed Tunnel Cross Over Existing Tunnel SCL South Portal (Contiguous Piles) Types of Construction South Portal 2

24 Project Elements Immersed Units Immersed Units Cut & Cover Cut & Cover Cross-over Section Cross-over Section SCL SCL Dredging Dredging Placing and finishing the Units Placing and finishing the Units South Complex Junction Highways North & Toll Booths M & E Services Refurbish Existing Tunnel

25 IMMERSED UNITS

26 May 08

27 2/9/8

28 30/9/8

29 24/10/8

30 28/11/8

31 21/01/9

32 2/3/9

33 28/5/9

34 11/6/9

35 17/9/09

36

37

38 Cut & Cover

39 Cut & Cover Technique Achieved Install diaphragm walls Excavate and install props. Construct floor slab. Construct tunnel internal walls Construct tunnel roof. Backfill over and remove props.

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62 Cross-over Section

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67 SCL

68 SCL Tunnels – Typical Section

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70 SCL

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77 DREDGING

78 Tunnel Location Caissons Fabrication Dredged Materials 4 Elements – 90 meters each Jan till June ,000 m3 Mobilization Nov 2009 Caissons Fabrication & Dredging

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81 DREDGING North transition Barge DN 18 undertaking initial dredge adjacent to transition structures using crane and bucket Material next to wall dredged by barge Cutter suction Dredger

82 WATER QUALITY MONITORS

83

84 Placing and finishing the Units

85 TRANSITIONS South transition Access door Transition structure complete and access door installed Floor slab behind transition structure complete Rock bund and sheet piled wall in front of transition removed in preparation for dredging Dredging complete Front wall of transition structure and waling beams demolished in preparation for sinking of immersed tunnel units Front wall demolished and shaft flooded Roof slab Transition structure complete

86

87 Jul 2008 Ballast Tanks

88 Inside Immersed units

89 Float Out

90 Foundations

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92 Immersion

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94 Sand Bed

95 Omega Gina Seals

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99 South Complex Junction

100 Realigned A185 Howard Street.1 Howard St/Priory Rd Roundabout.2 N/B Vehicle Inspection Area. 3 Straker St Link Road.4 Loop Road.5 Stricken vehicle area6 A19 southern approach road.7 Straker St Roundabout8 7

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109 HIGHWAYS NORTH AND TOLL BOOTHS

110 Remodelled North Bound Toll Plaza area5 5 New South Bound Toll Plaza area22 Bus Link 3 3 Realignment of the A19 Southbound4 4 Stricken vehicle area 6 6 A187 Link Road Vehicle Inspection & Change Facility

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115 M&E Services

116 Tunnel Fixed Fire Suppression System

117 Tunnel Fixed Fire Suppression System Pumps

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120 Control Room

121 REFURBISH EXISTING TUNNEL

122 Existing Configuration 2 x 3.65m wide lanes no marginal strips Proposed Configuration 2 x 3.15m wide lanes 0.5 marginal strips Existing Tunnel

123 REFURBISH OF TUNNEL OFFICES

124

125 Web sites tt2.co.uk newtynecrossing.info HAVE A PARTY


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