A $3.5 million Rangitīkei electricity network upgrade is set to enter its final stage.
The work, scheduled to start on March 13, will involve installing a steel duct which will hold an electricity cable along the side of the Rangitīkei River Bridge on the southern approach to Bulls.
Powerco general manager for electricity Karen Frew said depending on conditions such as weather, they hoped to have the work completed in a week.
To complete the project, traffic management will be in place overnight between 7pm and 7am Monday to Friday, with one lane operational on the bridge.
Frew said the work would be carried out overnight under stop-go controls to limit disruption.