Contractor ProjectTransport Agency projects – Fixing SH20AContrafed PUblishingMay 22, 2015May 11, 2016 by Contrafed PUblishingMay 22, 2015May 11, 2016 IN SIMPLE TERMS, the SH20A (Auckland) to Airport upgrade involves turning a current expressway standard intersection into a motorway standard one. A lot of readers...