Major A1 Reconstruction Works in Cambridgeshire Scheduled for 2027 Following Serious 2024 Incident

National Highways has confirmed that permanent reconstruction works on a damaged stretch of the A1 near Peterborough are expected to commence in 2027 after a serious collision in late 2024 caused significant structural damage beneath the carriageway.

The incident took place near Water Newton when a heavy goods vehicle left the southbound side of the A1 and crashed into an adjacent field, impacting an ageing culvert structure located beneath the road.

Emergency and temporary engineering measures were completed during 2025, allowing the route between Wansford and Alwalton to reopen fully with two operational lanes while specialists continued detailed investigations into the long-term repair requirements.

According to National Highways, engineers are now preparing for a major infrastructure replacement project which will involve constructing an entirely new culvert system rather than carrying out partial remedial repairs.

A spokesperson for the organisation said the scheme would involve “complex and substantial engineering activity” due to the scale and age of the existing structure.

Preparatory activity is due to begin later this year, with the primary construction phase currently planned for 2027.

National Highways also confirmed that traffic management measures, including reduced speed restrictions, will remain in place until the long-term repair programme has been completed.

The decision to fully replace the culvert is intended to ensure the infrastructure meets current engineering and resilience standards while improving the long-term reliability of this important section of the strategic road network.

The A1 remains one of the UK’s most significant transport routes, carrying high volumes of both commercial and passenger traffic between the north and south of the country.