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Tunnels facilitate first UK curved jacked-box structure
05 August, 2020
On 1 August 2020, UK-based Morgan Sindall broke through on the second of two tunnels on Network Rail's Werrington Grade Separation project. Advancing around 7m/day, a Lovat RM132 3.5m-diameter EPB machine has excavated two guide tunnels that form part of an ambitious civil engineering project that will see installation of the UK’s first-ever curved jacked-box structure.

Economical stacked platform solution chosen for BART
23 April, 2020
Bay Area Rapid Transit (BART) and the Santa Clara Valley Transportation Authority (VTA) have agreed on a stacked solution to bring rail services to 1.7m Silicon Valley residents. VTA’s 10km BART Silicon Valley Phase 2 extension project comprises four new stations (three underground, one at grade), an 8km TBM-bored tunnel, as well as storage and maintenance facilities. Agreement has centred around stacked tunnels in stations, as opposed to a less economical twin-tunnel approach.

Hammersmith connection Tunnel
27 March, 2020
The September BTS meeting saw a presentation on the Thames Tideway project’s Hammersmith Connection Tunnel. The talk was presented by Peter Coppenhall of Morgan Sindall, working as the designer’s representative in Thames Tideway West, and Ed Batty of BAM Nuttall, currently working as a Tunnel Manager in the Frogmore Connection Tunnel. This report was prepared for Tunnels and Tunnelling by Rosa Diez, project director for Mott MacDonald

Under the Swan River
27 March, 2020
Alex Conacher travels to the Forrestfield-Airport Link in Perth, Western Australia to speak with Salini Impregilo, NRW project director Richard Graham and tunnel construction manager Carlos Zapico

Ontario Line awards technical advisor contract
03 March, 2020
Ontario – Infrastructure Ontario and Metrolinx have selected the HDR-led team to serve as technical advisor for the approximately CAD 10.9bn (USD 8.1bn) Ontario Line in Toronto, it was announced on March 2. This nearly 16km long, free-standing subway line will be a combination of tunnelled and elevated sections, with 15 proposed stations, running from Ontario Place/Exhibition Place through downtown Toronto to the Ontario Science Centre.

Two Kowloon Peninsula road contracts awarded
06 December, 2019
Hong Kong – Contracts for the Central Kowloon Route (CKR) and Trunk Road T2 have been awarded to Bouygues Construction. These projects form part of a new trunk road known as Route 6. When completed, Route 6 will provide an east-west link in the region with three lanes in both directions.

Chelsea to Battersea tunnel surface settlements
16 August, 2019
Monitoring of ground surface movements induced by the construction of the Chelsea to Battersea Pipeline Tunnel project is presented as part of this case study. The surface settlements induced by the shaft construction have been analysed and compared with current methodologies and information from recent projects. Movements from excavation and construction of the tunnel are also analysed, and back-analysis of volume losses is presented. The authors are Veriuska Ortiz Lovera, geotechnical engineer, Mott MacDonald; Andrew Hejdner, project manager, Cadent Gas; James McCaffrey, construction manager, Skanska UK Construction; and Mohammad Arasteh, senior tunnel engineer, Mott MacDonald

Planning for the twenties
14 August, 2019
In this issue of Tunnels and Tunnelling International Paola De Pascali reports from the World Tunnel Congress, which was held in Naples in May and saw a number of publications from working groups and committees. The ITA Committee for Technology (ITAtech was particularly prolific.

AI targeted to assist project management
31 July, 2019
International – A group of consultants have banded together in the hopes of using AI to prevent cost overruns on major projects. The companies, Mott MacDonald, Endeavour Programme and WT Partnership have formed what they call a ‘global technology alliance’ to achieve this. WT is a cost management consultancy and Endeavour is an Australian technology firm.

A digital twin
08 July, 2019
Digitalisation offers a variety of new possibilities. One of them is the modelling of infrastructure with Building Information Modelling (BIM). Digital technology is a core element for the simplification of processes and for automation. This also applies to already-built infrastructure, as the RetroBIM project launched by Amberg demonstrates. Pedro Luis Iserte Llacer, head of BIM at Amberg and Roger Schaad, marketing specialist at Amberg discuss the project

Deepest and Longest
07 May, 2019
Yves Boissonnas, head of tunnelling at Sika Europe Management, the guest speaker at the January BTS lecture, provided a presentation on the Gotthard Base Tunnel

TAP project secures funding
27 February, 2019
Italy – The Trans Adriatic Pipeline (TAP), an EUR 3.9bn (USD 4.43bn) natural gas pipeline project in the eastern Mediterranean, has been granted full funding. Mott MacDonald was the lenders’ technical advisor on the project and performed technical due diligence on TAP’s design, construction and operational plans.

HRBT team to build Virginia extension
18 February, 2019
US – Virginia governor Ralph Northam announced February 15 that the Commonwealth of Virginia has selected Hampton Roads Connector Partners, a design-build team, to deliver the Hampton Roads Bridge-Tunnel (HRBT) Expansion Project. The fixed price (USD 3.3bn) and fixed completion date (November 1, 2025) contract is expected to be executed in April.

Mott MacDonald makes high-level changes
13 February, 2019
International – Mott MacDonald has appointed Paul Hammond as global practice leader for its new Infrastructure Development and Economics practice; Anne Kerr as new managing director for Greater China; and Liz King as managing director for Africa.

Chelsea-Battersea tunnel nears completion
10 December, 2018
Great Britain – Work on a new tunnel under the River Thames project in Battersea Park is nearing completion. Costing GBP 18M (22.9M USD), the 330m-long tunnel will transport gas under the Thames between Chelsea and Battersea in West London. Owned by gas distribution company Cadent, the tunnel forms part of a GBP 1bn programme to replace ageing infrastructure in the UK’s capital.

Steering the ship
21 September, 2018
Alex Conacher speaks with Mark Leggett of Mott MacDonald as he takes the immediate past chair position at the British Tunnelling Society and looks back on his two years at the helm

Finsbury park square works
16 May, 2018
The November BTS talk describes the square works for Finsbury Park and was presented by three speakers; Farid Acha, lead tunnel engineer for London Underground; John Elliot, director of underground infrastructure for Golder, and Menelaos Lydakis, chartered engineer and project manager of Spencer Group. The talk gives an insight into the scheme design of the project, detailed design and how it was finally implemented during the construction of the scheme. This report was prepared by Rosa Diez of Mott MacDonald

Crossrail SCL Design
26 March, 2018
Mott MacDonald project director Rosa Diez looks at the work required for Crossrail’s contract C121 – sprayed concrete lining design

ORD Express rail RFQ responses announced
14 February, 2018
USA - Chicago mayor Rahm Emanuel announced February 7 the Chicago Infrastructure Trust (CIT) received four responses to the RFQ to design, build, finance, operate and maintain the O’Hare Express operating system.

Breakthrough on West London gas tunnel
04 January, 2018
Great Britain - A 330m-long tunnel from London’s Chelsea to Battersea Park has broken through. Owned by gas distribution company Cadent, the tunnel forms part of a GBP 1bn programme to replace ageing infrastructure.