The Department for Transport (DfT) has provided an update on a timetable for the £1.3bn dualling of the A66, saying that National Highways is looking to start construction by the end of 2026.
The project, which will see the final single-carriageway stretches of the A66 dualled between Scotch Corner and Penrith, was given the green light in July last year.
Despite being approved in summer 2025, campaigners, MPs, councillors, and members of the public have questioned when a full timetable for the dualling scheme will be revealed.
But, providing an update this week, the DfT said it has "confirmed our commitment to this scheme, and we expect work to begin in the period of five years from 2026/27 to 2030/31 inclusive".
It added that "National Highways is working to commence construction by the end of 2026".
A spokesperson from the DfT said: "More detail will be provided in due course, including later this year when National Highways publishes its Delivery Plan, expected this summer.
"These improvements will strengthen road safety, cut journey times and support businesses and freight across the North.
"A business case for the scheme will need to be approved by the Government before main works can start, as with any major Government project.
"The scheme will support the Government’s mission to kickstart economic growth, by supporting businesses and freight across the North."
Campaigners and local MPs hailed the approval as a “pivotal moment” for communities across North Yorkshire, County Durham and Cumbria, where residents and businesses have long called for safety improvements and better connectivity.
When complete, the 50-mile corridor will provide a continuous dual-carriageway between the M6 and A1(M), reducing journey times by up to 12 minutes and offering greater reliability.
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Previously, local MPs, including Rishi Sunak, Tim Farron and Sam Rushworth, welcomed the investment, citing safety benefits, reduced congestion and economic opportunities for their constituencies.
With at least 12 fatalities reported on the A66 since 2023 and a heavy reliance on the route by freight hauliers, campaigners say delays to the start of work could have real consequences, as 25 per cent of vehicles are HGVs.
The scheme is expected to support thousands of jobs during and after construction, and act as a catalyst for wider investment across the North.
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