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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.

A new ‘A30 Temple to Higher Carblake Newsletter’ is coming soon.  Meanwhile please click on November Newsletter 2016 



A30 Junctions

If you are travelling to Cornwall please read our travel advice in ‘Journey Impact’ to help avoid delays.

Please note: Four 4 lanes will not be available throughout the May Bank Holiday on 29th May 

For UPDATES please scroll down and click on ‘read article’ –  click arrows eitherside to review previous updates.

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




Construction Updates

  • 24th April 2017

    Kier Travel Update – 24 April 2017

    A30 – Travel Advice During Peak Times

    Drivers are asked to try and avoid peak travel times or pre-plan an alternative route prior to reaching the ‘bottle-neck’ on Bodmin Moor at Temple.

    Please try and avoid the following peak travel times as the volume of traffic soon builds up during busy holiday periods.

    Westbound A30 – Fridays between 12noon and 6pm and Saturdays from 8am until 4pm.

    Eastbound A30: Fridays 10am until 4pm; Saturdays and Sundays 10am to 4pm. Please remember – Monday mornings can also be busy.

    In the event of major congestion Highways England will update their Variable Message System (VMS) on the southbound M5 before Exeter enabling you to make an informed decision and switch to the A38 as a possible alternative.

    If you are visiting or leaving Cornwall, “Have a safe trip.”

    Any queries please contact our dedicated answerphone on 07779 439 637 or email: a30bodmin@kier.co.uk                                                                                    

    Read article
  • 18th April 2017

    Kier Travel and Works Update – 18 April 2017

    A30 – Airfield Road junction closure now extended to Thursday 4th May 2017

    Please note closures extended to Wednesday 3rd and Thursday 4th May for concrete pours – road will re-open when all work completed.

    Airfield Road will only be closed at the immediate junction with the A30.

    Access will still be available for Bodmin Airfield and its environs including the Kier site compound.

    Access for Airfield Road from the A30 is only available for westbound A30 traffic by following the short diversion via Lidcutt Road. Diversion signs will be in operation.

    When works are completed Airfield Road will reopen for left-turn only.

    Traffic from Airfield Road will be able to turn-left onto the current westbound A30 carriageway merging with through traffic at Helland junction.  

    Any queries please contact the A30 Answerphone line on 07779 439 637 or via Email: a30bodmin@kier.co.uk                                                                                    



    Read article
  • 7th April 2017

    Kier Travel Update – 7 April 2017

     A30 – Trewardale Junction – open to traffic                                                                

    Please be advised the Trewardale Junction is now open for traffic turning into and out of the junction.

    Trewardale (Junction 1. on website plan) is open to enable eastbound A30 traffic to turn-left into the unclassified lane for the Blisland area or traffic can exit and turn-left out of the junction onto the eastbound A30 carriageway.

    Traffic is prohibited from turning right at the junction onto the westbound contraflow of the A30.

    This temporary access has been opened to help facilitate the extra traffic envisaged during the busy Bank Holiday period using the Four Winds junction.

    If further details are required please contact the Kier answerphone service on 07779 439 637 or 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