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, 12 April 2024.Unless otherwise stated, closures start at 9pm and finish at 5am.NORTHERN MOTORWAY (SH1)Onewa Road northbound on-ramp, 7-11 AprilCENTRAL MOTORWAY JUNCTION (CMJ)Southbound lanes between Fanshawe Street off-ramp and Hobson Street on-ramp, 8-11 April (approx. 10:00pm to 5:00am)SH1 southbound to SH16 eastbound (Port) link, 8-11 April (approx. 10:00pm to 5:00am)SH1 southbound to SH16 westbound link, 8-11 April (approx. 10:00pm to 5:00am)Northbound lanes between Symonds Street off-ramp and Wellington Street on-ramp, 7-9 April (approx. 10:00pm to 5:00am)SH1 northbound to SH16 westbound link, 7-9 April (approx. 10:00pm to 5:00am)SH1 northbound to SH16 eastbound (Port) link, 11 April (approx. 10:00pm to 5:00am)Eastbound lanes between Nelson Street (SH16) off-ramp and Grafton Road on-ramp, 8-11 AprilSOUTHERN MOTORWAY (SH1)Southbound lanes between Mt Wellington Highway off-ramp and East Tamaki Road on-ramp, 7-8 April (approx. 10:00pm to 5:00am)Mt Wellington Highway southbound on-ramp, 7-8 AprilPrinces Street southbound on-ramp, 7-9 AprilHighbrook Drive southbound on-ramp, 7-8 AprilSouthbound lanes between Takanini off-ramp and Drury/SH22 on-ramp, 7-11 AprilTakanini southbound on-ramp, 7-11 AprilPapakura southbound on-ramp, 7-11 AprilNorthbound lanes between Drury/SH22 off-ramp and Takanini on-ramp, 8-11 AprilPapakura (Diamond) northbound on-ramp, 8-11 AprilPapakura (Loop) northbound on-ramp, 8-11 AprilDrury/SH22 northbound on-ramp, 8-11 AprilRamarama northbound on-ramp, 7-8 AprilRamarama northbound off-ramp, 7-8 AprilPioneer Road northbound off-ramp, 5-13 April (24/7)Southbound lanes between Mercer off-ramp and Mercer on-ramp, 8 April (approx. 10:00pm to 5:00am)Northbound lanes between Mercer off-ramp and Mercer on-ramp, 8 & 10 April (approx. 10:00pm to 5:00am)Dragway Road northbound off-ramp, 10 April (approx. 10:00pm to 5:00am)Southbound lanes between Hampton Downs off-ramp and Hampton Downs on-ramp, 7 AprilNorthbound lanes between Hampton Downs off-ramp and Hampton Downs on-ramp, 7 AprilSouthbound lanes between Hampton Downs off-ramp and Rangiriri on-ramp, 9-10 AprilHampton Downs southbound on-ramp, 9-10 AprilNORTHWESTERN MOTORWAY (SH16)Te Atatu Road (Diamond) southbound on-ramp, 7-8 AprilEastbound lanes between Great North Road off-ramp and Great North Road on-ramp, 7 & 9-10 April (approx. 10:00pm to 5:00am)Great North Road eastbound off-ramp (Waterview southbound tunnel closed), 8 AprilSH16 eastbound to SH20 southbound link (Waterview southbound tunnel closed), 8 AprilSH16 westbound to SH20 southbound link (Waterview southbound tunnel closed), 8 AprilUPPER HARBOUR MOTORWAY (SH18)Albany Highway westbound off-ramp, 7-8 April (approx. 7:30pm to 5:00am)Albany Highway eastbound on-ramp, 7-8 April (approx. 7:30pm to 5:00am)SOUTHWESTERN MOTORWAY (SH20)Rimu Road northbound on-ramp, 10-11 AprilSTATE HIGHWAY 2 (SH2)Mangatawhiri eastbound off-ramp, 9 April (approx. 10:00pm to 5:00am)Eastbound lanes between Mangatawhiri off-ramp and Rawiri Road, 10 April (approx. 10:00pm to 5:00am)Westbound lanes between Rawiri Road and Mangatawhiri Road, 10 April (approx. 10:00pm to 5:00am)Koheroa Road westbound on-ramp, 10 AprilMangatangi westbound off-ramp, 10 AprilPlease follow the signposted detours. NZ Transport Agency thanks you for your co-operation during these essential improvements and maintenance.