Smart motorways works are set to continue to cause delays on the M27 and M3 this week.

Southampton's motorists have been warned of 11 road closures they should avoid on the National Highways network.

All of these are slip road closures related to smart motorways.

Two of them are expected to cause moderate delays – with drivers facing waits of between 10 and 30 minutes.

The latest expected works list, with notes from National Highways, shows that 10 closures already in place are expected to carry on this week:

• M27, from 9pm November 17 2020 to 6am April 27 2022, slight delays (under 10 minutes): M27 westbound, junction 8, slip road closures for M27 Smart Motorways, diversion via Highways England network.

• M27, from 8pm February 7 to 6am April 29, moderate delays (10-30 minutes): M27 westbound, junction 4, slip road and lane closures for M27 Smart Motorways, diversion route via Highways England network.

• M27, from 8pm October 17 2019 to 6am May 12 2022, slight delays (under 10 minutes): M27 westbound, junction 5 to junction 4, carriageway closure for M27 Smart Motorways, diversion via local authority network.

• M3, from 6am March 26 to 6am May 23, slight delays (under 10 minutes): M3 southbound to M27 eastbound, Lane closures for M27 Smart Motorways.

• M27, from 8pm February 6 to 6am May 23, slight delays (under 10 minutes): M27 westbound, junction 7 to junction 4, carriageway closure for M27 Smart Motorways, diversion via local authority network.

• M27, from 8pm February 8 to 6am May 28, slight delays (under 10 minutes): M27 eastbound, junction 4 to junction 7, carriageway closure for M27 Smart Motorways, diversion via local authority network.

• M27, from 8pm April 4 to 6am June 1, slight delays (under 10 minutes): M27 eastbound and westbound, junction 7 to junction 9, Lane closures for M27 Smart Motorways.

• M27, from 8pm April 4 to 6am June 22, slight delays (under 10 minutes): M27 eastbound and westbound, junction 7 to junction 9, Lane closures for M27 Smart Motorways.

• M27, from 8pm February 28 to 6am June 25, moderate delays (10-30 minutes): M27 eastbound, junction 8 to junction 9, carriageway closure for M27 Smart Motorways, diversion via local authority network.

• M27, from 9pm October 26 2018 to 6am July 5 2022, slight delays (under 10 minutes): M27 eastbound, junction 8, slip road and lane closures for M27 Smart Motorways, diversion via Highways England network.

And one more closure will begin over the next seven days:

• M27, from 6am April 25 to 6am May 21, slight delays (under 10 minutes): M27 eastbound, 8, 24/7 lane closure for barrier repairs for M27 Smart Motorways.

National Highways is responsible for maintaining motorways and major A-roads, so closures of smaller roads will not be included in their schedule.

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