Drivers are once again reminded to stay vigilant as work continues on a major commuting highway. 

National Highways have released their up-to-date information on a series of night closures that will take place on the M4 motorway so crucial building works can be undertaken. 

The planned closures are as follows: 

Thursday, September 5

M4-Westbound

M4 westbound Jct 12 to Jct 13 carriageway closure from 9 pm to 6 am. 

M4 Westbound Jct 4B to M25 Anticlockwise Jct 15 link road closure from 10 pm to 5 am. 

M4 westbound Jct 18 exit slip closed from 9 pm to 6 am. 

M4 westbound Jct 21 to 23 Prince of Wales Bridge closed 8:30 pm to 6 am. 

 

M4-Eastbound

M4 Eastbound Jct 4B to M25 clockwise and anticlockwise Jct 15 link road closures from 10 pm to 5 am. 

M4 eastbound Jct 23 to 22 Prince of Wales Bridge closed from 8:30 pm to 6 am. 

 

Friday, September 6

M4-Westbound

M4 westbound Jct 12 to Jct 13 carriageway closure from 9 pm to 6 am. 

M4 westbound Jct 18 exit slip closed from 10 pm to 6 am. 

M4 westbound Jct 21 to 23 Prince of Wales Bridge closed 8:30 pm to 6 am. 

 

M4-Eastbound

M4 eastbound Jct 23 to 22 Prince of Wales Bridge closed from 8:30 pm to 6 am. 

 

Saturday, September 7

M4-Westbound

M4 westbound Jct 21 to 23 Prince of Wales Bridge closed 8:30 pm to 6 am. 

 

Sunday, September 8

M4-Eastbound

M4 Eastbound Jct 5 entry slip road closure from 10:30 pm to 5 am.