Medway Tunnel is to close overnight this week to allow essential maintenance works to take place.
The closures will affect both directions, and will take place from 8pm to 5:45am for four nights, starting tonight (March 12).
Medway Highways have a quarterly programme of closures in place to allow maintenance to take place but to minimise disruption to road users.
During the closures, diversions will be in place. Drivers are advised to cross the river via the Rochester Bridge.