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, 14 April 2023. Please note this Traffic Bulletin is updated every Friday.Unless otherwise stated, closures start at 9pm and finish at 5am.NORTHERN MOTORWAY (SH1)Southbound lanes between Waiwera off-ramp and Silverdale on-ramp, 11-13 AprilOrewa southbound on-ramp, 11-13 AprilMillwater southbound on-ramp, 11-13 AprilNorthbound lanes between Silverdale off-ramp and Waiwera on-ramp, 11-13 April (approx. 10:00pm to 5:00am)Orewa northbound on-ramp, 11-13 AprilSilverdale northbound on-ramp, 11-13 AprilSouthbound lanes between Oteha Valley Road off-ramp and Greville Road on-ramp, 10 April (approx. 10:00pm to 5:00am)Oteha Valley Road southbound on-ramp, 10 April (approx. 09:30pm to 5:00am)Southbound lanes between Oteha Valley Road off-ramp and Greville Road on-ramp, 11 AprilOteha Valley Road southbound on-ramp, 11 AprilSouthbound lanes between Greville Road off-ramp and Constellation Drive on-ramp, 12 AprilGreville Road southbound on-ramp, 12 AprilNorthbound lanes between Constellation Drive off-ramp and Greville Road on-ramp, 12-13 April (approx. 10:00pm to 5:00am)Constellation Drive northbound on-ramp, 12-13 April (approx. 10:00pm to 5:00am)Constellation Drive southbound off-ramp, 11 & 13 AprilConstellation Drive southbound on-ramp, 11 AprilEsmonde Road (Diamond) northbound on-ramp, 10-13 AprilCENTRAL MOTORWAY JUNCTION (CMJ)None plannedSOUTHERN MOTORWAY (SH1)Southbound lanes between Greenlane off-ramp and Mt Wellington Highway on-ramp, 12-13 April (approx. 11:00pm to 5:00am)Greenlane southbound on-ramp, 12-13 April (approx. 10:00pm to 5:00am)Tecoma Street southbound on-ramp, 12-13 April (approx. 10:00pm to 5:00am)Ellerslie-Panmure Highway southbound on-ramp, 12-13 April (approx. 10:00pm to 5:00am)Southbound lanes between Mt Wellington Highway off-ramp and East Tamaki Road on-ramp, 10 April (approx. 10:30pm to 5:00am)Mt Wellington Highway southbound on-ramp, 10 April (approx. 09:30pm to 5:00am)Princes Street southbound on-ramp, 10 April (approx. 09:30pm to 5:00am)Highbrook Drive southbound on-ramp, 10 April (approx. 09:30pm to 5:00am)Southbound lanes between Mt Wellington Highway off-ramp and East Tamaki Road on-ramp, 11 April (approx. 10:00pm to 5:00am)Mt Wellington Highway southbound on-ramp, 11 AprilPrinces Street southbound on-ramp, 11 AprilHighbrook Drive southbound on-ramp, 11 April.Northbound lanes between Manukau off-ramp and Te Irirangi Drive on-ramp, 10 April (approx. 11:00pm to 5:00am)Redoubt Road northbound on-ramp, 10 April (approx. 10:00pm to 5:00am)Northbound lanes between Manukau off-ramp and Te Irirangi Drive on-ramp, 11 & 13 April (approx. 10:00pm to 5:00am)Redoubt Road northbound on-ramp, 11 & 13 AprilNorthbound lanes between Ramarama off-ramp and Drury/SH22 on-ramp, 10 April (approx. 10:00pm to 5:00am)Ramarama northbound on-ramp, 10 April (approx. 10:00pm to 5:00am)Northbound lanes between Ramarama off-ramp and Drury/SH22 on-ramp, 11-13 AprilRamarama northbound on-ramp, 11-13 AprilPokeno northbound off-ramp, 11 April (approx. 10:00pm to 5:00am)NORTHWESTERN MOTORWAY (SH16)Lincoln Road northbound on-ramp, 11-13 AprilNorthbound lanes between Rosebank Road off-ramp and Te Atatu on-ramp, 11-13 April (approx. 10:00pm to 5:00am)Patiki Road northbound on-ramp, 11-13 AprilSH16 eastbound to SH20 southbound link (Waterview southbound tunnel closed), 11 AprilGreat North Road eastbound off ramp (Waterview southbound tunnel closed), 11 AprilSH16 westbound to SH20 southbound link (Waterview southbound tunnel closed), 11 AprilGreat North Road westbound off-ramp, 12 AprilEastbound lanes between St Lukes Road off-ramp and St Lukes Road on-ramp, 11-13 April (approx. 10:00pm to 5:00am)UPPER HARBOUR MOTORWAY (SH18)Paul Mathews Road eastbound off ramp, 10 AprilEastbound lanes between Albany Highway off-ramp and Paul Mathews Road, 12-13 AprilSH18 eastbound to SH1 northbound link, 12-13 AprilAlbany Highway eastbound on-ramp, 12-13 AprilAlbany Highway westbound off-ramp, 11 AprilSquadron Drive westbound off-ramp, 10-11 AprilSOUTHWESTERN MOTORWAY (SH20)Dominion Road southbound on-ramp, 10-12 AprilNorthbound lanes between Coronation Road off-ramp and Rimu Road on-ramp, 13 April (approx. 10:00pm to 5:00am)Coronation Road northbound on-ramp, 13 April (approx. 10:00pm to 5:00am)Southbound lanes between Lambie Drive off-ramp and SH1 links, 10 April (approx. 11:00pm to 5:00am)Lambie Drive southbound on-ramp, 10 April (approx. 10:00pm to 5:00am)SH20 southbound to SH1 northbound link, 10 April (approx. 11:00pm to 5:00am)SH20 southbound to SH1 southbound link, 10 April (approx. 11:00pm to 5:00am)Southbound lanes between Lambie Drive off-ramp and SH1 links, 11 & 13 April (approx. 10:00pm to 5:00am)Lambie Drive southbound on-ramp, 11 & 13 AprilSH20 southbound to SH1 northbound link, 11 & 13 April (approx. 10:00pm to 5:00am)SH20 southbound to SH1 southbound link, 11 & 13 April (approx. 10:00pm to 5:00am)GEORGE BOLT MEMORIAL DRIVE (SH20A)Northbound lanes between Landing Drive and SH20 Link, 11-12 AprilSH20A northbound to SH20 northbound link, 11-12 AprilKirkbride Road northbound on-ramp, 11-12 April