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Silvertown Tunnel Project update

January 2022: Keltbra to offer key environmental solutions on the Silvertown Tunnel

A leading UK specialist in engineering business, Keltbra, has won the contract to offer key environmental solutions on the Silvertown Tunnel. The contract is on behalf of and Riverlinx CJV (Ferrovial Construction, BAM Nuttall & SK Ecoplant) and Transport for London (TfL).

Works will comprise the transportation of excavated material through barges able to carry up to 1800 tonnes. Comparing with traditional transportation ways, a barge uses 35% less carbon. The Silvertown Tunnel project involves the building of a twin-bore road tunnel offering a new link from and the Tidal Basin Roundabout junction on the A1020 Lower Lea Crossing/Silvertown Way to the A102 Blackwall Tunnel Approach on Greenwich Peninsula.

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The scope of key environmental solutions on the Silvertown Tunnel Keltbray will provide.

  • All labour, plant, materials, facilities, equipment, services, supervision and any resource needed to carry out and finalise the analysis and classification testing.
  • Offer barges able to carry up to 1800 tonnes to collect excavated material from the work sites and move to restoration areas for recovery.
  • Stockpile management with treatment and/or mixing of the material.
  • Transport, off-load and dispose of all waste from the construction.

Keltbray is distinctive in that it can welcome many schemes in London through the River Thames, utilising the barges use and offering clients much sustainable option to congested London roadways. The firm has the knowledge and expertise to control heavily contaminated soils if found by using their experienced staff and its professional in-house chemists.

After the treatment procedures application to construction materials which may entail either physio-chemical or mechanical processes, the material is eventually used to benefit restoration areas along the River Thames. On key environmental solutions on the Silvertown Tunnel, the firm set the goal of implementing the waste hierarchy by attaining 90% (or greater) recycling or reuse of building and demolition waste, and 95% (or greater) recycling or reuse of clean dug material.

The Silvertown Tunnel project Introduction

Silvertown Tunnel is a road tunnel being constructed beneath the River Thames accross to the Greenwich Peninsula from west Silvertown. Transport for London are the developers while the finance, design, build and maintain tender was awarded to the Riverlinx consortium. The tunnel will comprise of dedicated lanes for heavy cargo vehicles and buses, but it will not be used by cyclists or pedestrians. All future vehicles that will use the tunnel will be zero emission. The Silvertown Tunnel will join to the A1020 Silvertown Way from the north side and on the south side with A102 Blackwall Tunnel Approach. Population and traffic is expected to rise in the area of London because of great developments planned and underway on Greenwich Peninsula, at the Royal Docks, Stratford and Barking Riverside.The Silvertown Tunnel will provide a better crossing, making sure goods and services still moves swiftly around London.

The scope.
The design is for a twin-bore tunnel to link the A1020 Silvertown Way Crossing with the A102 road Blackwall Tunnel Approach, on a sequence similar to the Emirates Air Line cable car. Lane 1 will be committed to cargo vehicles and buses over 7.5t, while lane 2 will be designed for all traffic. The tunnel is going to affect access to Thames Wharf station which was proposed as one of the Docklands Light Railway’s London City Airport extension. In 2012, the cost was estimated to be £600m. A consultation in 2015 later revealed that the cost of construction was revised to be £1bn. Maintenance and operation of the tunnel over 25 years is aimed to cost another £1bn. It was proposed that the scheme was to be evaluated in 2006 after completion of the Thames Gateway Bridge. Ken Livingstone who was the then London Mayor, supported the project in principle by expressing a preference that the link was to be a road tunnel. The Mayor’s Transport Strategy said that the link construction would accompany the implementation of the subsequently cancelled Thames Gateway Bridge.

Read also:The Melbourne Metro Tunnel Project Timeline

Silvertown Tunnel Project Timeline


Silvertown Tunnel and the Gallions Reach Ferry public consultation took place from February to March. The consultation was further conducted from 29 October until 1 February the following year.

A discussion on tolling the Blackwall and Silvertown tunnels opened in October. The government accepted the proposal in 2018 May. November

The contract was awarded to Riverlinx consortium in November. RiverLinx consortium will design, finance, build and maintain the Silvertown Tunnel. The consortium consists of Aberdeen Standard Investments, Macquarie Capital, BAM PPP PGGM, Cintra and SK Engineering & Construction.The twin tunnels and the area surrounding was also to fall in the Ultra Low Emission Zone from October 2021.

Main construction activity started. It was revealed that most of the construction materials will get transported by river All on-site construction machinery will be meeting the Mayor’s Non-Road Mobile Machinery Low Emission Zone Standards
All vehicles working on the project will be Euro VI and observing the Mayor’s Direct Vision Standard. The tunnel is intended to lower congestion in the Blackwall Tunnel and the two tunnels will be tolled when it completes in 2025.

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