Unknown Road Road Closure — Portsmouth

A high-severity road closure is set to affect commuters in the Portsmouth area, with the Unknown Road closed from 20 July 2026 at 20:00 to 21 July 2026 at 05:00, according to National Highways. The closure, which is part of National Highways' Strategic Road Network, is located near Portsmouth and is expected to cause significant disruptions to traffic in the region. National Highways, the highway authority responsible for the closure, has advised drivers to plan their journeys in advance and to consider alternative routes to avoid the affected area.

The closure is set to have a major impact on drivers who regularly use the Unknown Road, with traffic expected to be diverted onto other routes. Drivers are advised to check traffic apps and websites for the latest information on traffic conditions before setting out on their journeys. This will help them to plan their routes and avoid any congested areas. Additionally, drivers can use sat nav systems or mapping apps to find the best alternative routes and to receive real-time updates on traffic conditions.

National Highways has stated that the closure is necessary as part of its ongoing work to maintain and improve the Strategic Road Network. The organisation is responsible for managing and maintaining the major roads in England, and it works to ensure that the road network is safe and efficient for all users. The closure is just one example of the work that National Highways is undertaking to improve the road network, and it is expected to have a positive impact on traffic conditions in the long term.

In the short term, however, the closure is likely to cause significant disruptions to traffic. Drivers are advised to allow extra time for their journeys and to be patient when driving through the area. It is also a good idea to consider alternative modes of transport, such as public transport or car sharing, to reduce the number of vehicles on the road and to minimise congestion. By planning ahead and being aware of the closure, drivers can help to reduce the impact of the disruption and to ensure that their journeys are as smooth as possible.

For the latest information on the road closure and for updates on traffic conditions, drivers can visit Road Closures UK. The website provides up-to-date information on road closures and traffic disruptions across the UK, and it is a valuable resource for anyone who needs to plan their journeys in advance. By staying informed and planning ahead, drivers can help to minimize the impact of the closure and to ensure that their journeys are safe and efficient.