A raised median strip to built in Moerewa's main street on State Highway 1 will make the section of road safer.
The median strip will prevent motorists driving straight across the state highway or turning right on to the highway, NZ Transport Agency Northland system manager Jacqui Hori-Hoult said.
Drivers will only be able to turn left in and left out of Nisbet St and Wynyard St.
"The local community has been consulted on this safety initiative and they support it," Hori-Hoult said.
"They want it to happen as the median strip is also expected to slow down vehicles travelling through Moerewa."