Motorists faced disruption over a number of weeks after a major project to rebuild the sewer beneath the roundabout and resurface the road began in the early summer. The work came to an end last month.
But now drivers are being warned they face more delays and diversions – as the top layer of asphalt was not laid properly and the road will have to be resurfaced.
The work is due to be carried out over two weekends in January, causing the roundabout to be closed from 1pm on Saturday 11 January to 9pm on Sunday 12 January, and 1pm on Saturday 18 January to 9pm the following day.
Work will not be carried out earlier so that traffic over the holiday period is unaffected, although the surface will be monitored, said the Growth, Housing and Environment Department in a statement.
Rob Cabot, highway maintenance manager for the government, said: ‘We have a very good relationship with our contractors, and will be working with them to determine what happened in this instance to reduce the chance of it happening again.
‘We’re sorry for any disruption that the resurfacing will cause but I can assure Islanders that cost of relaying the roundabout will be met by the contractor.’