Waka Kotahi NZ Transport Agency and Hutt City Council have agreed to close access to Cornish St in Petone from SH2 to improve the safety of the area.
They have been making changes to SH2 to make it safer as part of the Road to Zero safety strategy.
Changes ranged from small, short term fixes to large improvements, said Waka Kotahi's regional manager of maintenance and operations, Mark Owen.
"The Cornish Street access is hidden around a corner after the Petone offramp, and has only a short, narrow turning lane.
"In 2021, a driver used the access to join the highway in the wrong direction, towards Wellington, ending in a fatal crash. By changing the road layout we can prevent it happening again."
Access to businesses, and to the Cornish St gate of Belmont Regional Park will be available via Priests Avenue, 500m further north on SH2.
The decision to close the access follows discussion with local businesses. Access will be closed from April 19.
An interim closure will be put in place at first, with permanent safety barriers installed at a later date.