Severn Trent's tunnelling machine breaks through to complete the tunnel.
Severn Trent's tunnelling machine breaks through to complete the tunnel.

A three-kilometre tunnel under the streets of Newark has been completed by Severn Trent.

It has taken nine months for the Siege Breaker tunnelling machine to complete its journey from Crankley Point to Millgate as part of the company’s £60m investment to upgrade the town's water and waste system.

Since launching in August last year, the machine has created a tunnel big enough to drive a transit van through.

Nick Wallace, of Severn Trent, said: “It’s really exciting that the Siege Breaker has completed its journey. This is such an important part of the project that will play a huge role in making sure the people of Newark won’t have to worry when it rains any more, as these bigger and better sewers will help protect their homes from flooding.”

The Siege Breaker weighs a huge 160 tonnes, which is one-and-a-half times as heavy as an average blue whale, and is said Mr Wallace.

“By tunnelling, we have been able to massively reduce the disruption caused to the town by our scheme, as the majority of the work is taking place under the roads, rather than on them.”

“We are making some real progress with our work in Newark,” said Mr Wallace.

“We are really thankful for everyone’s continued support and understanding as we make these essential improvements."

Severn Trent is running a free shuttle bus until June during its work on Castlegate for anyone to use when visiting the town to help keep local businesses open during the construction.

BNM Alliance is carrying out work on behalf of Severn Trent.

For more information on Severn Trent’s work in Newark, visit