Basingstoke A340 Thornycroft roundabout improvements

Improvements to Thornycroft roundabout

Last update: February 2022

Latest updates

Works completed.

Scheme overview

Hampshire County Council appointed Mildren Construction Ltd, who have carried out the improvement works which commenced on 24 June 2019. Construction was temporarily suspended between March and June 2020 due to government guidelines on Covid-19.  

The main features of the scheme are:

  • carriageway widening works on the existing approach roads;
  • carriageway widening works on the roundabout;
  • installation of traffic signals on the roundabout and approach roads;
  • installation of controlled pedestrian/cycle crossing on Churchill Way West.


The A340, along with the A30, is a key access route for Basingstoke, helping to link the town centre and other transport links to the wider strategic road network, such as the A33, A339, Ringway and the M3.

This route will also help provide a key access route for local development sites, such as the 3,000 new homes and local services at the Manydown site. Improvements at Thornycroft roundabout, along with those on other key routes around Basingstoke, supports the Enterprise M3 Local Enterprise Partnerships (EM3 LEP) wider plan for local growth.

Public consultation closed

A meet the contractor event was held on Thursday 13 June 11:30am to 2:30pm at Morrisons Superstore, to discuss the scheme with the Mildren Construction and County Council officers.

A drop in event was held on Thursday 13 September 12pm to 7pm at Loddon Vale Indoors Bowls Club to discuss the scheme with County Council officers.

The consultation is now closed, but you can still view the exhibition slides .

Background Information: first public consultation

In July 2015 there were three public exhibitions about these works and related major highway improvement works across Basingstoke. The consultation ran from 1 July to 13 August 2015. You can still view the exhibition plans

A total of 82 questionnaires were returned, with feedback being received on all the upcoming schemes in Basingstoke, as well as general feedback on the issues faced by Basingstoke as a whole.

View the public consultation report

Funding arrangements

The current budget for the scheme is £9.4 million. There is allocated Local Growth Funding from the Enterprise M3 LEP of £7.3 million. An additional £2.1 million of funding from local contributions has also been allocated.

Contact us
Economy, Transport and Environment Department
Hampshire County Council
The Castle

SO23 8UD