NZ Transport Agency Waka Kotahi advises of the following closures for motorway improvements. Work delayed by bad weather will be completed at the next available date, prior to Friday, 23 August 2024.Unless otherwise stated, closures start at 9pm and finish at 5am. Traffic management may be in place before the advertised closure times for the mainline.NORTHERN MOTORWAY (SH1)Southbound lanes between Orewa off-ramp and Silverdale on-ramp, 22 AugustOrewa southbound on-ramp, 22 AugustMillwater southbound on-ramp, 22 AugustNorthbound lanes between Silverdale off-ramp and Orewa on-ramp, 22 August (approx. 10:00pm to 5:00am)Silverdale northbound on-ramp, 22 AugustNorthbound lanes between Northcote Road off-ramp and Tristram Avenue on-ramp, 20 August (approx. 10:00pm to 5:00am)Northcote Road northbound on-ramp, 20 AugustCENTRAL MOTORWAY JUNCTION (CMJ)Southbound lanes between Fanshawe Street off-ramp and Hobson Street on-ramp, 21-22 August (approx. 10:00pm to 5:00am)SH1 southbound to SH16 eastbound (Port) link, 21-22 August (approx. 10:00pm to 5:00am)SH1 southbound to SH16 westbound link, 21-22 August (approx. 10:00pm to 5:00am)SH16 eastbound to SH16 (Port) link, 21-22 AugustSH1 northbound to SH16 westbound link, 18-19 August (approx. 10:00pm to 5:00am)SH1 northbound to SH16 eastbound (Port) link, 18-19 August (approx. 10:00pm to 5:00am)SH1 northbound to SH16 eastbound (Port) link, 20-21 August (approx. 10:00pm to 5:00am)Wellesley Street East (SH1) eastbound off-ramp, 20-21 August (approx. 10:00pm to 5:00am)Eastbound lanes between Wellesley Street East (SH1) off-ramp and Alten Road, 22 August (approx. 10:00pm to 5:00am)Eastbound lanes between Wellesley Street East (SH16) off-ramp and Alten Road, 22 August (approx. 10:00pm to 5:00am)Grafton Road eastbound on-ramp, 22 August (approx. 10:00pm to 5:00am)SOUTHERN MOTORWAY (SH1)Northbound lanes between Ellerslie-Panmure Highway off-ramp and Wellesley Street on-ramp, 18-19 August (approx. 10:00pm to 5:00am)Gillies Avenue northbound on-ramp, 18-19 August (approx. 10:00pm to 5:00am)Greenlane northbound on-ramp, 18-19 August (approx. 10:00pm to 5:00am)Ellerslie-Panmure Highway northbound on-ramp, 18-19 August (approx. 10:00pm to 5:00am)Tecoma Street southbound off-ramp, 18 AugustNorthbound lanes between Mt Wellington Highway off-ramp and Greenlane on-ramp, 20 August (approx. 10:00pm to 5:00am)Ellerslie-Panmure Highway northbound on-ramp, 20 AugustSouth Eastern Highway (SEART) northbound on-ramp, 20 AugustMt Wellington Highway northbound on-ramp, 20 AugustSouthbound lanes between Takanini off-ramp and Drury/SH22 on-ramp, 18-23 August (approx. 9:30pm to 5:30am)Takanini southbound on-ramp, 18-23 August (approx. 9:00pm to 5:30am)Papakura (Loop) southbound on-ramp, 18-23 August (approx. 9:00pm to 5:30am)Papakura (Diamond) southbound on-ramp, 18-23 August (approx. 9:00pm to 5:30am)Northbound lanes between Drury/SH22 off-ramp and Takanini on-ramp, 18-22 AugustPapakura (Diamond) northbound on-ramp, 18-22 AugustPapakura (Loop) northbound on-ramp, 18-22 AugustDrury/SH22 northbound on-ramp, 18-22 AugustNorthbound lanes between Drury/SH22 off-ramp and Papakura on-ramp, 23 August (approx. 10:00pm to 5:00am)Drury/SH22 northbound on-ramp, 23 AugustSouthbound lanes between Bombay off-ramp and Bombay on-ramp, 22 AugustNorthbound lanes between Bombay off-ramp and Bombay on-ramp, 22 AugustBeaver Road northbound on-ramp, 22 AugustBeaver Road northbound off-ramp, 22 AugustNikau Road northbound on-ramp, 22 AugustNORTHWESTERN MOTORWAY (SH16)Southbound lanes between Waimauku Roundabout and Trigg Road, 18 August (approx. 6:00pm to 6:00am)Northbound lanes between Trigg Road and Waimauku Roundabout, 18 August (approx. 6:00pm to 6:00am)Southbound lanes between Foster Road and Trigg Road, 19-22 August (approx. 8:00pm to 5:00am)Northbound lanes between Trigg Road and Foster Road, 19-22 August (approx. 8:00pm to 5:00am)Northbound lanes between Royal Road off-ramp and Brigham Creek Roundabout, 21 AugustSH16 northbound to SH18 eastbound link, 21 AugustNorthbound lanes between Te Atatu Road off-ramp and Lincoln Road on-ramp, 22 AugustTe Atatu Road northbound on-ramp, 22 AugustUPPER HARBOUR MOTORWAY (SH18)Hobsonville Road eastbound on-ramp, 21 AugustSOUTHWESTERN MOTORWAY (SH20)Queenstown Road southbound on-ramp, 22 AugustNeilson Street northbound off-ramp, 19 & 21 AugustRimu Road northbound on-ramp, 19 & 21 August