Skip to main content

A30 Cornwall upgrade nears finishing line

Trevalso underpass to open by early summer
By Liam McLoughlin May 30, 2025 Read time: 2 mins
The new B3285 section from Boxheater to Carland is part of the A30 dualling scheme. Image: National Highways

The UK's National Highways says it is working towards opening the Trevalso underpass in Cornwall by early summer as part of the A30 Chiverton to Carland Cross dualling scheme.

Since opening the new dual carriageway last June, National Highways and principal contractors Costain have been continuing ancillary work through the winter and spring, including local road connections, Cornish hedging and the planting of 44,000 trees across the landscape.

The programme of work has seen the old A30 open as the B3285 and B3288 between the Chybucca and Carland junctions, and National Highways says the Trevalso underpass near Zelah is on course to be completed and opened to traffic in July.

The Trevalso underpass is anticipated to be opened by early July, with Pennycomequick Lane and the Church Lane underpass opening soon after, while the Cornish hedging work will also be completed in the summer and the planting of another 40,000 trees taking place across the scheme landscape in late autumn.

Andrew Alcorn, National Highways’ programme manager for the A30 Chiverton to Carland Cross scheme, said: “Opening the new dual carriageway has made a significant and positive difference to people’s journey times and opening up the old A30 will improve local connectivity and bring benefits to communities and residents alongside the new road.

“We’ve progressed a significant amount of ancillary work, including planting, hedging and landscaping, we’re in touching distance of the finishing line now and we thank people in advance for their continued co-operation and patience while we carry out these final works.”

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

For more information on companies in this article

Related Content

  • New international trade crossing linking Canada and US
    June 9, 2015
    The Detroit River is short, only 45km, and narrow in places, less than 1km. Around a quarter of the annual $658 billion Canada-US trade crosses over the river. That’s $160 billion worth of goods trucked each year between Detroit in the US state of Michigan and the Canadian city of Windsor in the province of Ontario - the Windsor-Detroit Corridor. There are several types of crossings, but the vast majority of commercial traffic must use the 2.3km Ambassador Bridge (see box). A new bridge was initially prop
  • US$15 billion West African highway link
    January 13, 2025
    Work will start for a US$15 billion West African highway link.
  • The radically changing face of UK highways management
    May 14, 2014
    The British Government policy paper ‘Action for Roads: A network for the 21st century’ sets out radical change to the strategic way roads are funded and managed – including plans to turn the Highways Agency into a Government-owned company and a pledge to invest over €33.4 billion (£28 billion) in roads maintenance between 2015 and 2020. Jenny Moten, Highways Agency divisional director for Network Services, gave a keynote presentation on the new approach to strategic highways management during the Road Safet
  • Rokbak RA30 & RA40 set to impress
    February 13, 2023
    Rokbak is bringing a pair of its haulers and a strong team to show exactly how the brand has become a major mover in both the US and global markets.