MOTORISTS are set to endure heavy traffic as two major sets of roadworks got underway - but a traffic boss said: "You were warned".

Phase three of the Millbrook Roundabout development began yesterday, resulting in lengthy delays on Redbridge Road.

There were also major problems on the M27 in both directions between junction five, Eastleigh, and junction nine, Whiteley – an eight mile stretch, as work began on the smart motorway scheme.

Southampton City Council cabinet member for transport and public realm, Jacqui Rayment added: “The work is of major importance.

“We have warned drivers that work was about to resume, and to prepare and plan journeys.

“I would like to thank everyone for their patience.”

Now into its penultimate stage, phase three, the Millbrook Roundabout’s £8.3 million scheme will see the slip-road from Millbrook Road West onto the roundabout shut, as well as the exit from the roundabout onto First Avenue, heading to Dock Gate 20.

Motorists who break the 50mph limit on the M27 will face fines when average speed cameras are switched on.

Highways England, which is are carrying out the £250 million motorway work, say the yellow cameras will help them carry out the work safely.

A spokesperson for Southampton City Council said: “As with all new major projects the delays are more pronounced in the first few days of the work as drivers adjust to the changes.

“We are continually monitoring the road network and will make changes to traffic management where necessary.

“The advice is to allow extra time for journeys, especially in the morning and evening peak times.”

The spokesperson added that information about the works and alternative routes was available on the council website.

Labour councillor for Redbridge ward, Lee Whitbread said: “With the festive season just behind us and people now returning to work, clearly this has put additional pressure on the highways network.

“Councillors continue to be kept up to date on progress as we enter the third phase of the works.”

The Millbrook flyover will remain open during phase three, and is set to be completed by March 3.

The final part of the work: phase four, from March to late-April, will see the closure of First Avenue (northbound) up to the roundabout and part of the slip-road onto Redbridge Road up to the junction with Second Avenue.