Motorists are being told to expect disruption during roadworks on Green Street and Mount Bingham this month.
The resurfacing work will start on Green Street on Monday (8 January).
Islanders cannot use the road on weekdays from 7:30am until 8pm.
There will be a staggered start to work so both roads are not closed simultaneously, making it slightly less disruptive for commuters.
Sections of Mount Bingham will start to be resurfaced later in the month (31 January).
The direction of traffic on South Hill will be reversed between 6am and 10am each morning so it is easier for cars to access Pier Road car park.
The work is planned to finish on 8 February.
Diversions will also be put in place to remind people of the works. Islanders are advised to plan for disruptions in their journeys.
The government has produced this map to show the roads affected by the roadworks.

Remembrance Sunday in the Channel Islands
'Military people are not good at asking for help... they have to be supported'
Ministers 'do not endorse' Inquiry comments in safeguarding meeting
Jersey FA over-50s walking football team are European Champions
Call for government to rebuild reserves against increased global uncertainty
"Please wear your poppy again this year with pride and remembrance"
Minister faces fresh criticism over workers' rights comments
Aquasplash to close for 'essential maintenance'