Drivers in and around Cornwall will have have to watch out for National Highways road closures this week.

A30, from 7pm February 7 to 5am March 5, slight delays (under 10 minutes): A30 eastbound and westbound, Penzance to Exeter mobile lane closures for drainage works.

• A30, from 8pm February 21 to 5am February 22, slight delays (under 10 minutes): A30 eastbound, Kennards House exit and entry slip road closures for drainage works, exit slip diversion via A30 eastbound to Pennygillam junction, Launceston and return, entry slip diversion via A30 westbound to Fivelanes.

• A30, from 8pm February 22 to 6am February 23, moderate delays (10-30 minutes): A30 Kennards House westbound, exit and entry slips closed for drainage works. Exit slip diversion via A30 westbound to Polyphant junction, to turn and return eastbound. Entry slip diversion via A30 eastbound to Pennygillam junction, to turn and return westbound.

• A30, from 7pm February 23 to 5am February 24, slight delays (under 10 minutes): A30 eastbound, Pennygillam exit slip road Closed for Horticultural works. Diversion via A30 eastbound to Launceston and return to exit.

• A30, from 8pm February 24 to 5am February 25, slight delays (under 10 minutes): A30 eastbound, Pennygillam entry slip road Closed for drainage works. Diversion via A30 westbound to Trebursye and return eastbound.

• A30, from 7pm February 25 to 5am February 26, slight delays (under 10 minutes): A30 eastbound, Launceston exit slip road closed for drainage works. Diversion via A30 eastbound to Lifton Down and return westbound to Pennygillam to exit.

• A30, from 8am to 5pm on February 28, slight delays (under 10 minutes): A30 eastbound, Fivelanes lane closure for horticultural works.

• A30, from 7pm February 28 to 6am March 1, slight delays (under 10 minutes): A30 westbound, Pennygillam exit slip road closed for drainage works. Diversion via A30 westbound to Trebursye and return to exit.

• A30, from 7pm March 1 to 6am March 2, slight delays (under 10 minutes): A30 westbound, Pennygillam entry slip road closed for drainage works. Diversion via A30 eastbound to Launceston and return.

• A30, from 7pm March 2 to 6am March 3, slight delays (under 10 minutes): A30 westbound, Two Bridges exit and entry slip roads closed for drainage works.

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