Wellington City Council is advising people to use public transport this weekend to avoid major traffic delays caused by the closure of Jervois Quay.
Spokesman Richard MacLean said Wellingtonians should use trains or buses, or walk and leave the car at home if they can.
"Our advice to people is if at all possible don't drive into town, or if you have to drive into town you have got to expect the trip will be longer than normal."
MacLean said the congestion will be bad all day Friday with it becoming significantly worse in the evening around rush hour.