The Government will invest $14.6 million in long-awaited upgrades to Route 52.
Labour List MP based in Wairarapa Kieran McAnulty has welcomed Wednesday's announcement.
"I am thrilled with this investment enhancing Route 52. It's a great step forwards in upgrading the Tararua District's roading infrastructure."
Tararua mayor Tracey Collis discussed the issue of Route 52 during a consultation visit on carbon farming on June 26 with Police Minister Stuart Nash, Finance Minister Grant Robertson and Labour MP Kieran McAnulty.
Route 52, a former state highway, runs the entire length of the Tararua District between Central Hawke's Bay and Wairarapa providing an important link between the regions, for locals, travellers, tourists and transport vehicles.