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A30 Temple to
Higher Carblake
improvement scheme

Scheme Overview

The current single carriageway of the A30 between Temple and Higher Carblake is the only section of single carriageway between leaving Scotland and reaching Temple. This 4.5km section of road is being improved to dual carriageway standard for the entire length which will negate regular traffic congestion in the area.


Link to Cornwall Council video release 22.03.16

Work started in June 2015 and is due for completion in July 2017.

We are dualling the single carriageway on the A30 between Temple and Higher Carblake, just east of Bodmin. The length of road involved is 2.8 miles (4.5km). Three busy road junctions will be replaced by three overbridges; one bridge at either end at Cardinham and Temple junctions and one relatively centre at Preeze Cross/Four Winds. The dual carriageway is being constructed literally alongside the existing road and traffic management is a key element of the project.

Impact on Your Journey

Regular users of the road will know that there has always been considerable congestion on Fridays through to Mondays, Bank Holidays and of course during the summer holiday period for the past decade. However this should all change when the works are completed.

There is a strictly enforced 40 mph average speed restriction throughout the works as a result of the narrow lanes and for the safety of all road users. It may be interesting to note that the speed restriction should only add a few minutes to your total journey time.


Benefits of the scheme

The scheme will relieve congestion and improve journey times – it will also attract business growth and inward investment to Cornwall by improving links with the rest of England. The new dual carriageway will also be much safer than the single carriageway as a result of the three overbridges.

There will also be job opportunities for local individuals and businesses for the duration of the scheme.

Who are Kier?

We invest in, build, maintain and renew the places where people live, work and play. Kier is all around us… from engineering the tunnels and bridges that transform cities… to keeping the lights shining in our streets… to building award winning homes, schools and hospitals… to keeping our water, rail and highways running smoothly.

Our job is to keep our world working.

Our new ‘A30 Temple to Higher Carblake Newsletter is now available to view.  Please click on November Newsletter 2016 



A30 Junctions



New contraflow started in February. 

Please note updates below for further information. 

For CONSTRUCTION or TRAVEL UPDATES please scroll down and click on ‘read article’ – click arrows on eitherside of report to view previous updates.

Please note: In the event of an emergency within the site management area please call 07710 402 810




Construction Updates

  • 3rd February 2017

    Kier Travel and Works Update – 3 February 2017

    A30 – New contraflow between Helland junction and Pounds Conce

    When the new contraflow system is implemented from Saturday 11th February between Helland junction and Pounds Conce please note the following road junction changes which may affect some drivers.

    If required please refer to the junction identification plan which is available via a link on the ‘Home’ page of this site.  

    Helland junction – the left-turn from the A30 for eastbound traffic (for Helland and Blisland) will reopen; however the left-turn onto the A30 eastbound will remain closed as a result of safety regulations involving the new contraflow.

    Lidcutt Road junction – Cardinham Downs (A30 south-side) will continue to be open for left-turn A30 westbound traffic only. Lidcutt Road will also be accessible for left-turns when Airfield Road is closed temporarily.

    Trewardale – junction with the A30 (Junc. 1 on plan) for Blisland and the St Breward area will remain closed for all traffic in and out of junction.

    Airfield Road – junction with the A30 (Junc. 2) will remain only accessible for A30 westbound traffic (travelling towards Bodmin). Following the contraflow change a left-turn will be available via a ‘new’ temporary crossing at Cardinham Gap.

    To coincide with the new contraflow from Monday 13 February the Airfield Road junction will be closed to all traffic for approximately three weeks. This will enable carriageway works to be completed at the junction. Access for westbound A30 traffic requiring Airfield Road or the Cardinham, Mount area will be available via Cardinham Gap continuing on the westbound carriageway taking the first left-turn into Lidcutt Road returning to Airfield Road and Cardinham. The short diversion will be signed.

    Please note: As a result of traffic regulations and safety considerations within a contraflow system ‘Right-turns’ and ‘U’ turns’ will be prohibited at Cardinham Gap for all A30 traffic.

    The ‘Right-turn’ prohibition from Airfield Road onto the A30 will remain. There will be no access onto the A30 from Airfield Road for left-turns until all carriageway works at the junction have been completed.

    When the A30 junction works are complete Airfield Road will reopen for westbound A30 traffic only; traffic from Airfield Road will be able to turn-left onto the westbound carriageway merging at Helland junction.  

    Higher Carblake (private access lane) (Junc. 3) access will remain for left and right-turns into and out of the junction (may be reviewed).

    Four Winds – junction with the A30 (Junc. 4 north-side only) will remain open for left and right turning traffic into and out of the new junction layout.

    Higher Colvannick (private access lane) (Junc. 5) access will remain for left and right-turns into and out of the junction (may be reviewed).

    Pound Conce (private access lane) (Junc. 6) access will remain for left and right-turns into and out of the junction (may be reviewed).

    Trethorne Lane – junction with A30 (Junc. 7) access will remain for left and right-turns into and out of the junction (may be reviewed).

    Any queries please contact the Kier 24hr answerphone on 07779 439 637 or our dedicated email a30bodmin@kier.co.uk

    Read article
  • 20th January 2017

    Kier Travel and Works Update – 20 January 2017

    A30 – New contraflow between Helland junction and Pounds Conce

    There will be a revised contraflow system at the western end of the scheme between Helland junction and Pounds Conce. Following implementation of the contraflow from 6.00am on Saturday 11th February all traffic will change to the eastbound dual carriageway from Helland junction (just east of Bodmin on-ramp). The new carriageway will then be utilised passing Penlan (Gulf) Garage, Darcroft Garage, Four Winds junction linking in with the current carriageway just east of Pounds Conce.

    The revised contraflow will enable carriageway works to take place in the current westbound section of the A30.

    Please note: Helland junction will be open for A30 eastbound traffic requiring the Helland/Blisland area; however no access is available onto the A30 eastbound. Trewardale junction (for Blisland and St Breward) will remain closed for all traffic (in and out); however the junction at Four Winds (north-side) will continue to be open for traffic requiring the Blisland and St Breward area with a much improved access.

    For drivers travelling west on the A30 (towards Bodmin) requiring Airfield Road including the Cardinham area a new left-turn will be made available. Diversion will be via westbound dual carriageway to Lidcutt Road (first left) across Cardinham Downs. Access to properties and businesses off Airfield Road will be available via Lidcutt Road. Airfield Road will be completely closed to enable the junction to be resurfaced. This section of work should last approximately 3 weeks when Airfield Road junction will reopen for westbound A30 traffic only.

    Please note: Following the carriageway works the ‘Cardinham Gap’ will only be available for left-turns into Airfield Road; right-turns into or out of Cardinham Gap and ‘U’ turns are prohibited by regulation on the grounds of safety. For the duration of the works access to the A30 will still be available via Lidcutt Road from the Cardinham area. The short diversion will be signed.

    For any query please contact Kier via our email on a30bodmin@kier.co.uk or our answerphone helpline 07779 439 637.


    Read article
  • 12th January 2017

    Kier Travel and Works Update – 12 January 2017

    A30 – Contraflow change – dates rescheduled

    Due to the re-sequencing of carriageway works please be advised that the contraflow changes planned for Tuesday 31st January and Wednesday 1st February have now been rescheduled.

    Further information will be made available when dates are confirmed; the overnight works will not involve road closures.

    Any queries please email a30bodmin@kier.co.uk


    Read article


We value your feedback.

“To assist local residents, Kier have opened a ‘Help Desk’ to discuss any clarification on the scheme. Please call our Help Desk number, leave a message, name and email address and we will endeavour to respond quickly. Alternatively, please contact us via email; we welcome all comments.”

Help Desk: 07779 439637

Email: a30bodmin@kier.co.uk