Drivers have once again been warned to stay vigilant as a series of roadworks affecting a major commuting motorway will continue this week. 

National Highways has released the full list of planned nighttime closures that will affect motorists over the next few days. 

The list of planned works is as follows: 

 

Monday, September 16:

M4-Westbound

M4 westbound Jct 6 exit slip road closure from 9 pm to 6 am.

M4 westbound Jct 12 entry slip road closure from 9 pm to 6 am.

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

 

M4-Eastbound

M4 eastbound Jct 20 closed between exit and entry slip roads from 9 pm to 6 am. 

 

Tuesday, September 17 

M4-Westbound

M4 westbound Jct 6 exit slip road closure from 9 pm to 6 am.

M4 westbound Jct 12 entry slip road closure from 9 pm to 6 am.

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

 

M4-Eastbound

M4 eastbound Jct 20 closed between exit and entry slip roads from 9 pm to 6 am. 

 

Wednesday, September 18 

M4-Westbound

M4 westbound Jct 6 exit slip road closure from 9 pm to 6 am. 

M4 westbound Jct 12 entry slip road closure from 9 pm to 6 am. 

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

 

M4-Eastbound

M4 Eastbound Jct 4 exit slip road closure from 10 pm to 5.30 pm. 

M4 Eastbound Jct 4 entry slip road closure from 10 pm to 5.30 pm. 

M4 eastbound Jct 20 closed between exit and entry slip roads from 9 pm to 6 am. 

 

M4-Clockwise

M4 clockwise Jct 4 Roundabout Closure from 10 pm to 5.30 am. 

 

Thursday, September 19

M4-Westbound

M4 westbound Jct 12 entry slip road closure from 9 pm to 6 am. 

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