The tunnels are open 365 days per year, however some single lane closures are necessary to ensure the maintenance and safe operation of our site. Further short duration (approximately 20 minute) full closures of the tunnels are sometimes necessary to deploy traffic management and to complete certain maintenance activities.
During lane closures reduced speed limits (10mph) are in operation, please comply with all road signage and instructions given by tunnel staff. Additional closures may be required to address priority issues, where possible these closures will be advertised in advance on social local media and our website.