Chris Bishop says he's committed to working across the aisle to secure a pipeline for major projects

The Infrastructure Minister has told the transport and infrastructure committee collaboration's needed - to get on top of the country's challenges.

Labour select committee member, Barbara Edmonds, began a Budget scrutiny hearing by asking Bishop whether he considers cross-party support possible.

Bishop says he welcomes that - and feels New Zealand has reached the end of the road for back-and-forward with infrastructure.