Question: are both mersey tunnels open today?
Answer: Both Mersey Tunnels are open 24 hours a day, 364 days a year (on Christmas Day only Kingsway (Wallasey) Tunnel is open). However, we may close one of the Tunnels, usually at night, to carry out maintenance. ... Bicycles are not permitted through the Kingsway (Wallasey) Tunnel.