Basingstoke A340 Thornycroft roundabout improvements

Improvements to Thornycroft roundabout

Last update: August 2019

Latest updates

Construction works ongoing

Hampshire County Council has appointed Mildrens Construction Ltd to carry out these improvement works which commenced on 24 June 2019, with an expected duration of 18 months.  Works are currently underway on three of the roundabout arms. In the NE and SE quadrants, earthworks to enable widening are almost complete. Installation of new drainage and utility diversions will follow. To the West, partial widening has been completed to allow a new kerbline to be constructed. Once complete widening works on the opposite kerbline will commence. Temporary off-peak traffic management, Monday to Friday between 9:30am to 4pm will continue to be utilised to reduce traffic flow to single file to facilitate these works with capacity being increased to two lanes in each direction at peak times. No road closures are currently planned at this stage of construction.

Scheme overview

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