Traders and residents describe how life on the streets has changed.
Residents welcomed the project, which they say will make daily life easier for thousands of families.
Local volunteers are also taking part in clean-up and tree-planting campaigns in the area.
What the project includes
The first phase is due to be completed within months, with the rest following before the end of the year.
A hotline and an online form are available for residents to report problems or send suggestions.
Our goal is a cleaner and safer city for every resident.
City officials say the project is part of a wider plan to upgrade services and public spaces across the districts.
Work is being carried out in phases to keep disruption to traffic and nearby shops to a minimum.
