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, 3 May 2024.Unless otherwise stated, closures start at 9pm and finish at 5am.NORTHERN MOTORWAY (SH1)Northbound lanes between Oteha Valley Road off-ramp and Silverdale on-ramp, 30 AprilOteha Valley Road northbound on-ramp, 30 AprilCENTRAL MOTORWAY JUNCTION (CMJ)SH1 northbound to SH16 eastbound (Port) link, 28-30 April (approx. 10:00pm to 5:00am)Eastbound lanes between Wellesley Street East (SH1) off-ramp and Alten Road, 1-2 May (approx. 10:00pm to 5:00am)Eastbound lanes between Wellesley Street East (SH16) off-ramp and Alten Road, 1-2 May (approx. 10:00pm to 5:00am)Grafton Road eastbound on-ramp, 1-2 MayWestbound lanes between Stanley Street off-ramp and Wellesley Street East on-ramp, 1-2 May (approx. 10:00pm to 5:00am)Westbound lanes between Parnell Rise and Wellesley Street East on-ramp, 28-30 April (approx. 10:00pm to 5:00am)SOUTHERN MOTORWAY (SH1)SH1 southbound to SH20 northbound link, 29 April & 1-2 May (approx. 10:00pm to 5:00am)Redoubt Road southbound on-ramp, 29 April & 1-2 MaySH1 northbound to SH20 northbound link, 29 April (approx. 10:00pm to 5:00am)Southbound lanes between Takanini off-ramp and Papakura on-ramp, 29 April (approx. 10:00pm to 6:00am)Takanini southbound on-ramp, 29 April (approx. 10:00pm to 6:00am)Southbound lanes between Takanini off-ramp and Papakura on-ramp, 2 MaySouthbound lanes between Takanini off-ramp and Drury/SH22 on-ramp, 1 MayTakanini southbound on-ramp, 1-2 MaySouthbound lanes between Papakura off-ramp and Drury/SH22 on-ramp, 28 & 30 AprilPapakura southbound on-ramp, 28 & 30 April & 1 MayPapakura (Loop) northbound on-ramp, 28-30 April 1-2 MayNorthbound lanes between Drury/SH22 off-ramp and Papakura on-ramp, 28-30 April & 1-2 MayDrury/SH22 northbound on-ramp, 28-30 April & 1-2 MaySouthbound lanes between Nikau Road off-ramp and Nikau Road on-ramp, 28-30 April & 1-2 MayNorthbound lanes between Ridge Road off-ramp and Nikau Road on-ramp, 28-30 April 1-2 MayPioneer Road northbound off-ramp, 26-30 April & 1-4 May (24/7)Hampton Downs northbound on-ramp, 2 MayHampton Downs northbound off-ramp, 2 MayNORTHWESTERN MOTORWAY (SH16)Te Atatu Road (Diamond) southbound on-ramp, 28 AprilUPPER HARBOUR MOTORWAY (SH18)Greenhithe Road eastbound on-ramp, 29-30 April & 2 MayGreenhithe Road westbound on-ramp, 2 MaySOUTHWESTERN MOTORWAY (SH20)Rimu Road northbound on-ramp, 29-30 April & 1 MaySouthbound lanes between Mahunga Drive off-ramp and Massey Road on-ramp, 2 May (approx. 10:00pm to 5:00am)Walmsley Road southbound on-ramp, 2 MaySH20 southbound to SH20A southbound link, 2 May (approx. 10:00pm to 5:00am)Southbound lanes between Massey Road off-ramp and Puhinui Road on-ramp, 1 May (approx. 10:00pm to 5:00am)Massey Road southbound on-ramp, 1 MayNorthbound lanes between Cavendish Drive off-ramp and Massey Road on-ramp, 28 April (approx. 9:30pm to 5:00am)Puhinui Road northbound on-ramp, 28 April (approx. 8:30pm to 5:00am)Cavendish Drive northbound on-ramp, 28 April (approx. 8:30pm to 5:00am)Northbound lanes between Great South Road off-ramp and Puhinui Road on-ramp, 29 April (approx. 10:00pm to 5:00am)Cavendish Drive northbound on-ramp, 29 AprilNorthbound Service Road (Cavendish Drive to Puhinui Road) 29 AprilLambie Drive northbound on-ramp, 29 AprilSouthbound lanes between Puhinui Road off-ramp and SH1 links, 30 April (approx. 10:00pm to 5:00am)Southbound Service Road (Puhinui Road to Cavendish Drive), 30 AprilPuhinui Road southbound on-ramp, 30 AprilCavendish Drive southbound on-ramp, 30 AprilLambie Drive southbound on-ramp, 30 AprilSH20 southbound to SH1 northbound link, 30 April (approx. 10:00pm to 5:00am)SH20 southbound to SH1 southbound link, 30 April (approx. 10:00pm to 5:00am)