The company said significant progress has been made on the automation of its container terminal, due to go live in the second half of the 2019 calendar year.
It has also completed earth works at the Waikato Freight Hub and started construction of the first freight handling facility for Open Country Dairy.
Road and rail connections will be built during the next 12 months and the hub will open for business by mid-2019, it said.
As a result, capital expenditure was $130.5m, versus $88.2m in the year to June 2016.
"We're making a significant investment in our people, technology and infrastructure to establish a platform for sustainable future returns, with multiple projects, including automation, underway this year," said chief executive Tony Gibson.
Looking ahead, chair Liz Coutts said the risks to the trading environment are similar to last year.
Container shipping lines continue to consolidate, with the top 10 lines globally now accounting for 80 per cent of all container traffic.
In New Zealand, the largest line has captured around 50 per cent of the market and the number of container lines calling at Ports of Auckland is down to eight as a result of mergers and acquisitions.
"We face relentless pressure to increase efficiency and cut costs," she said.
Coutts said the company is also mindful of the potential threat to the global economy from the rise of protectionism and a possible trade war.
Any global economic slowdown that resulted would probably affect New Zealand and reduce global shipping volumes.
However, "the company is in a good position to weather such an event," she said.