NZTA advise that SH1 through the Mount Victoria Tunnel will be closed tonight for maintenance from 9:00pm until 5:30am Wednesday 15 August.
Traffic should detour around Oriental Bay, over Palliser Road, or through Newtown.
At the same time, the Murphy Street offramp from the SH1 motorway will also be undergoing maintenance.
Southbound motorists who need to access Murphy Streets or surrounding areas should use the Hawkestone Street Offramp, and turn left on to Hawkestone Street, then left on to Molesworth Street, right on to May Street, and back on to Murphy Street.
Please note this detour will add around five minutes to your journey.