UK Road Closed: National Highways

Motorists are advised to plan their journeys carefully as a significant section of the National Highways network will be closed overnight, affecting traffic in and around Southampton. A stretch of an unknown road, identified as 510515, will be closed from 20:00 on 6th August 2026 until 05:00 on 7th August 2026. This disruption is part of National Highways' ongoing maintenance programme to upgrade and improve the UK's Strategic Road Network.

The closure, which is expected to cause significant delays, will impact drivers travelling through the area and those using the road as a route to and from the city. The highway authority, National Highways, has put in place measures to mitigate the disruption, but drivers are advised to check traffic apps and social media for updates before embarking on their journey.

For those who need to travel through the area, alternative routes are available, and motorists are urged to plan their journeys in advance to avoid potential congestion. Drivers can check traffic flow and road conditions using the National Highways website or mobile app, which provides real-time information on traffic and roadworks along the Strategic Road Network. They can also use satnav systems or mapping apps, such as Waze or Google Maps, which often provide alternative routes and estimated journey times.

National Highways' Transport Data Feeds will be used to monitor and manage the disruption, allowing the authority to quickly respond to any changes in traffic flow or road conditions. While the closure is expected to cause significant delays, National Highways is working to ensure that the disruption is kept to a minimum and that drivers can continue to use the road network safely and efficiently.

Motorists are also advised to consider leaving earlier than usual and to allow plenty of time for their journey. Those who can avoid the area altogether are encouraged to use alternative routes, and drivers who must travel through the area are advised to be patient and to follow the instructions of traffic management staff.

For the latest information on this and other road closures, motorists are advised to check Road Closures UK or the National Highways website. By planning ahead and staying informed, drivers can help to reduce the impact of the disruption and ensure a safe and smooth journey.