He said apart from silos, Culham Engineering has also completed major projects for various clients in Auckland such as a walkway bridge that has an ability to carry emergency service vehicles as well as main water lines.
The 49-metre bridge was made in three pieces and Kirwan said it was possibly the largest load by road to go over the Brynderwyn Hills.
"It all comes down to good planning and that's something we're always proud of at Culhams. It shows that Northland does have an ability, when it comes to engineering capability, to serve the national and international market equally well," he said.
Skills, a bit of hard work, and people willing to invest to keep the continuity going were what Northland's competitive marine engineering sector offered, he said.
Other big projects Culhams, with more than 500 employees, delivered includes steel work for the Commercial Bay and the Convention Centre in downtown Auckland.
Kirwan said the announcement of the $94m from the Provincial Growth Fund for rail would help many companies to further build on their capabilities.