Road users travelling between Bedfordshire and Cambridgeshire are set to benefit from significant improvements sooner than expected, with National Highways confirming that the majority of the new A428 Black Cat to Caxton Gibbet scheme will open during spring 2027.The phased opening will allow motorists to begin using much of the upgraded route while the final and most technically demanding element of the project is completed later in the year.Once open, the scheme will provide a new 10-mile dual carriageway linking the Black Cat junction in Bedfordshire with Caxton Gibbet in Cambridgeshire, creating faster, safer and more reliable journeys across one of the region’s busiest transport corridors.Several major pieces of infrastructure will become operational during the first phase, including the new A421 flyover at Black Cat junction, fully upgraded junction arrangements at Caxton Gibbet and new dual carriageway access to the Cambridge Road junction.Together, these improvements are expected to ease congestion and improve connectivity for communities and businesses travelling between Milton Keynes, Bedford, St Neots and Cambridge.The final phase of the programme, scheduled to open in mid-summer 2027, will see the completion of the new A1 underpass at Black Cat junction.National Highways describes the underpass as the most complex engineering element of the entire project.During construction, project teams encountered a greater number of underground utility services than originally anticipated, including water, gas and telecommunications infrastructure that had to be carefully identified and relocated before construction could safely continue.Many of these essential services have been installed over several decades, and in some cases historic records have been incomplete. Protecting supplies to local homes, businesses and communities has therefore required detailed investigation and close collaboration with utility providers before work could progress.Because these specialist diversion works must be undertaken by the individual utility companies, the programme for the underpass has been extended to ensure the work is completed safely and correctly.By adopting a phased opening strategy, National Highways is ensuring that road users begin benefiting from the investment at the earliest possible opportunity rather than waiting for every element of the scheme to be completed.The project represents one of the largest road infrastructure investments currently under construction in the region and is expected to deliver long-term improvements in safety, network resilience and journey reliability while supporting future economic growth across Bedfordshire and Cambridgeshire.With the majority of the route due to open next spring, drivers will soon begin experiencing the benefits of a scheme that has been designed to improve connectivity across the East of England for decades to come.
A428 Black Cat Improvement Reaches Major Milestone as National Highways Confirms Phased Opening
