Lessons have been learnt from previous schemes which will ensure any disruption to traders is kept to a minimum, Craigavon Borough Council has said.
A spokesperson said that as the areas included in the scheme are separate, there would be flexibility to carry out works in individual phases, minimising inconvenience.
The council would also consider out of hours working where appropriate.
Meanwhile, the council has pointed out that no funding has yet been secured for the Portadown Linkages Project.
The council has appointed consultants to prepare outline designs and do an economic appraisal, and these will determine bids for funding and a start date.
The project is aimed at improving a number of streets and spaces on the edge of the town centre, linking to other features or locations of significance such as the train Station, the People’s Park, and the River Bann.
There would also be artworks linked to the town’s history and heritage at selected locations.
A spokesperson added, “If funding is secured and works proceed, council will work closely with DRD Roads Service as a key partner to ensure minimal disruption to motorists and pedestrians.”
The council said letters had been delivered to all properties in the streets affected in advance of meetings with community group representatives, statutory bodies and members of the public. Information was also made available in Portadown Town Hall for a week.
The plans are not on the council website at present but will be by next week.