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to this point”

“We developed the new style of pylon so

that we could have a 21st century design to offer

as we plan new transmission routes. The T-pylon

is not a replacement for the steel lattice pylon

but it’s a new option and in some landscapes its

shorter height and sleeker appearance can offer

real advantages”.

The ground works, foundations and erection of the

T-pylon at Eakring have been carried out by Balfour

Beatty. William McElwain, UK Territory Director at

Balfour Beatty said:

“We’re delighted to be working in partnership

with National Grid to deliver this landmark

project. As part of the construction process,

we’ve supported the development of

methodologies and processes to determine the

safest way to build all five of the new designs

which is a fantastic opportunity for Balfour

Beatty. ”.

Steel manufacturer Mabey Bridge have produced the

monopole and T cross section of the T-pylons as well as

doing the final painting of the structure at their factory

in South Wales.

Russells Ductile Castings in Yorkshire and Bradken

have been involved in metal castings. Other companies

involved are Allied Insulators and Eaves.


Contractors World UK & Ireland Vol 6 No 1


Light At The End Of The


National Grid completes digging after going underground to create London’s

new 32 km electricity superhighway.

• Tunneling complete on National Grid’s flagship

London Power Tunnels project

• Work to install electricity cables well underway with

first section due to go live later this year

• £1 billion project will help ensure London has the

power it needs to maintain its status as a leading

global city

After four years of digging beneath the bustling streets

of London, tunneling has now been completed on

National Grid’s flagship London Power Tunnels


The final breakthrough occurred at Kensal Green and

marks the end of an era for the project team who first

began sinking the tunnel shafts in 2011.

It’s been a truly epic undertaking that has seen en-

gineers working around the clock to carve out a 32 km

network of tunnels using two giant sized TBMs (Tunnel

Contractors World UK & Ireland