Waka Kotahi NZ Transport Agency advises of the following closures for motorway improvements. Work delayed by bad weather will be completed at the next available date, prior to Friday, 5 May 2023.Please note this Traffic Bulletin is updated every Friday. Unless otherwise stated, closures start at 9pm and finish at 5am.NORTHERN MOTORWAY (SH1)Oteha Valley Road southbound on-ramp, 3 MaySouthbound lanes between Greville Road off-ramp and Constellation Drive on-ramp, 30 AprilGreville Road southbound on-ramp, 30 AprilSH1 southbound to SH18 westbound link, 1 MayConstellation Drive southbound on-ramp, 3 MayNorthbound lanes between Greville Road off-ramp and Oteha Valley Road on-ramp, 2 - 4 May (approx. 9:30pm to 5:00am)Greville Road northbound on-ramp, 2 - 4 MayOnewa Road southbound on-ramp, 2 - 4 MayOnewa Road northbound off-ramp, 1 May (approx. 10:00pm to 5:00am)Constellation Drive northbound on-ramp, 30 AprilEsmonde Road (Diamond) northbound on-ramp, 30 April - 1 MayStafford Road northbound off-ramp, 1 May (approx. 10:00pm to 5:00am)Shelly Beach Road southbound off-ramp, 2 - 4 MayCurran Street northbound on-ramp, 1 MayFanshawe Street southbound off-ramp, 4 MayCENTRAL MOTORWAY JUNCTION (CMJ)Northbound lanes between Symonds Street off-ramp and Fanshawe Street on-ramp, 1 May (approx. 10:00pm to 5:00am)Wellington Street northbound on-ramp, 1 MaySH16 eastbound to SH1 northbound link, 1 MaySH1 northbound to SH16 westbound link, 1 May (approx. 10:00pm to 5:00am)Westbound lanes between Stanley Street off-ramp and Grafton Road on-ramp, 1 May (approx. 10:00pm to 5:00am)SH16 (Port) westbound to SH1 northbound link, 1 May (approx. 10:00pm to 5:00am)Wellesley Street East westbound on-ramp, 1 MaySOUTHERN MOTORWAY (SH1)Te Irirangi Drive southbound off-ramp, 30 April & 2 MayHill Road northbound on-ramp, 3 MaySouthbound lanes between Drury/SH22 off-ramp and Bombay on-ramp, 2 MayDrury/SH22 southbound on-ramp, 2 MayRamarama southbound on-ramp, 2 MayNorthbound lanes between Ramarama off-ramp and Drury/SH22 on-ramp, 30 April - 1 May & 3 - 4 MayNorthbound lanes between Bombay off-ramp and Ramarama on-ramp, 2 MayRamarama northbound on-ramp, 30 April - 4 MayBombay northbound on-ramp, 2 MayBombay southbound on-ramp, 3 MayBeaver Road southbound off-ramp, 3 MayBeaver Road southbound on-ramp, 3 MayNikau Road southbound off-ramp, 3 MayBombay southbound on-ramp, 3 MaySouthbound lanes between Mercer off-ramp and Mercer on-ramp, 30 AprilNorthbound lanes between Mercer off-ramp and Mercer on-ramp, 30 AprilNORTHWESTERN MOTORWAY (SH16)Hobsonville Road southbound on-ramp, 30 April & 2 MayLincoln Road southbound off-ramp, 30 AprilLincoln Road northbound on-ramp, 30 April - 4 MayLincoln Road northbound off-ramp, 4 MayNorthbound lanes between Great North Road off-ramp and Patiki Road on-ramp, 1 May (approx. 10:00pm to 5:00am)Rosebank Road northbound off-ramp, 1 May (approx. 10:00pm to 5:00am)Great North Road northbound on-ramp, 1 MaySt Lukes Road eastbound off-ramp, 1 May (approx. 10:00pm to 5:00am)