Plans to upgrade tree-lined Franklin Rd, which attracts hordes of visitors to its street display of Christmas lights, is set to begin this month.
After 12 months of consultation, Auckland Transport has released preliminary designs showing improvements for pedestrians, cyclists and vehicles.
The historic trees will have their roots protected from vehicles by redefining the berm area.
Auckland Transport roading group manager Andrew Scoggins said Franklin Rd is in poor condition and there are safety hazards for pedestrians, cyclists and drivers.
"Over the years tree roots have damaged footpaths, the drainage system and the road surface.