Further weekend and overnight closures of the A30 will take place next month to allow a new bridge to be completed.

National Highways says that, once completed, the Chiverton to Carland Cross upgrade will feature a ‘green bridge’ of which there are currently only six in the country, with this the seventh.

The new bridge is being built over the Marazanvose section of the new A30 dual carriageway in Cornwall.

The south section of the bridge has already been constructed, and the weekend work will see the new A30 realigned for traffic to travel underneath, allowing for construction of the north section over the existing road.

To enable the road alignment around the green bridge location, the A30 will be closed over the weekend of September 15 and 18, between Scorrier and Boxheater.

Preparation works will be carried out under overnight closures for the four nights leading up to the weekend (Monday, September 11 to Friday, September 15), 8pm to 6am nightly.

Work will also see the old Tolgroggan accommodation bridge dismantled, following installation of the new bridge earlier this year, while work will be completed at Chybucca to reopen the B3284 and allow traffic to travel over the A30.

During the weekend closure, from 8pm on Friday, September 15 to 6am on Monday, 18 September, traffic will be diverted from Boxheater on the A30 via B3285 and the A3075 to rejoin the A30 at Scorrier, with the eastbound diversion route in reverse.

Due to a low bridge (15’3”) at Scorrier, HGVs will be diverted via the A393 and A39 to rejoin the A30 at Carland.

Falmouth Packet: The diversion routes that will be in placeThe diversion routes that will be in place (Image: National Highways)

Neil Winter, National Highways senior project manager for the A30 Chiverton to Carland Cross scheme, said: “We appreciate the closure will have an effect on people’s journeys, and we advise people to plan ahead and allow a little extra time for their journeys over the weekend.

“We’ve been communicating the closure in advance to local communities and businesses, more information is available on our website, and we thank drivers in advance for their patience while the work takes place.”

The new bridge is described as a ‘green bridge’. Formed with two decks and planted extensively with plants and hedging, it will connect habitats separated by the new road and provide a safe passage across the road for badgers, voles and other small animals, insects and birds.

The bridge will also include a footpath and a bridleway for horse riders.

Pioneered in the Netherlands, the Terlet overpass was the first wildlife crossing constructed near The new carriageway is scheduled to be opened in winter 2023/2024.

The cost of developing the scheme is being partly funded by an £8 million contribution from the European Regional Development Fund, with an additional £12 million for the construction phase. The remainder of the cost of developing and delivering the scheme is being funded by central Government.