 The trust has made substantial voluntary contributions to the council for the maintenance of the tunnel since it opened.In June 2009, the Rochester Bridge Trust gave notice that it would transfer the Medway Tunnel to Medway Council pursuant to section 25 of the Medway Tunnel Act 1990 and make a payment to the Council of £3.648 million.The Medway Tunnel was the first immersed tube tunnel to be built in England and only the second of this type in the UK, the other being at Conwy, North Wales.