Drivers are reminded to plan ahead for this weekend’s closure of the A30 at Chiverton Cross near Truro, allowing extra time for their journeys and avoiding the area if possible.  

Closure will run from 7pm on Friday until 6am on Monday so traffic can be realigned on a new gyratory as part of work to remove Chiverton Cross roundabout - Cornwall’s worst accident hot-spot – in the A30 upgrade between “Chivvy” and Carland Cross.

Eastbound traffic will be diverted via the A3075 to Goonhavern and the B3285 to re-join the A30 at Boxheater, with the westbound diversion operating in reverse.

For HGVs and access to Truro, the diversion will be via the A39, A393 and A3047, while access will be maintained across the A30, via the B3284 at Chybucca for emergency service vehicles. Diversion routes have been communicated to bus companies.

A two-mile section of the A390 will also be closed from the Chiverton roundabout to Langarth Park, allowing for works to construct the new westbound slip road configuration at Three Burrows. Access for residents and businesses will be maintained, and information has been distributed locally.

The A30 between Scorrier and Boxheater will be realigned to the east and west of the current roundabout, with a contraflow in place to maintain access to the A390, A3075 and B3277 while further work continues during the year.

Neil Winter, National Highways’ senior project manager for the scheme, said: “The reconfiguration of the A30 at Chiverton represents a real milestone for the project. With the Chiverton roundabout effectively disappearing, drivers using the A30 will see this taking shape after the weekend.

“We appreciate the closure will have an effect on people’s journeys, and we understand roadworks can be frustrating. We advise people to plan ahead, add extra time for their journeys or avoid the area if possible. We thank drivers in advance for their patience while this significant work takes place.”

The new carriageway is scheduled to be opened in winter 2023/2024. Further information and updates are available at