Overnight motorway closures scheduled this week include a full closure near Watford tonight.
Roadworks on the Hertfordshire motorway stretches include a particularly large number of full carriageway closures this week.
This includes on the M25 at junction 20 (for Watford) tonight, the M1 near Watford and Hemel Hempstead on multiple nights, and the A1 just before it becomes the A1(M) on Sunday night.
M25 and M1 works will typically last from 10pm to 5.30am (or 11pm to 6am on weekends), while A1(M) works will tend to last from 9pm to 5am.
M25
Tuesday, April 28
- Anticlockwise closure junction 17 to 16, three lanes.
- Clockwise closure junction 19 to 20, three lanes.
- Clockwise closure at junction 20, full closure.
- Anticlockwise closure junction 24 to 23, two lanes.
Wednesday, April 29
- Anticlockwise closure junction 22 to 21a, two lanes.
- Anticlockwise closure junction 24 to 23, two lanes.
Thursday, April 30
- Anticlockwise closure junction 24 to 23, two lanes.
- Clockwise closure at junction 25, two lanes.
- Clockwise closure junction 25 to 26, two lanes.
Friday, May 1
- Clockwise closure junction 16 to 17, two lanes.
- Clockwise closure junction 17 to 18, two lanes.
Saturday, May 2
- Anticlockwise closure junction 25 to 24, three lanes.
- Anticlockwise at junction 25, full closure.
Sunday, May 3
- Anticlockwise closure junction 25 to 24, three lanes.
- Anticlockwise at junction 25, full closure.
M1
Tuesday, April 28
- Northbound closure junction 6 to 8, three lanes.
- Northbound closure junction 6 to 8, full closure.
- Southbound closure junction 9 to 8, three lanes.
Wednesday, April 29
- Northbound closure junction 6 to 8, three lanes.
- Northbound closure junction 6 to 8, full closure.
- Southbound closure junction 9 to 8, three lanes.
Thursday, April 30
- Northbound closure junction 5 to 6a, two lanes.
- Southbound closure junction 6a to 5, for two lanes.
- Northbound closure at M1 entry slip junction 6a, full closure.
- Northbound closure junction 6 to 8, three lanes.
- Northbound closure junction 6 to 8, full closure.
- Southbound closure junction 9 to 8, three lanes.
Friday, May 1
- Northbound closure junction 6 to 8, full closure.
- Southbound closure junction 9 to 8, three lanes.
Saturday, May 2
N/A
Sunday, May 3
N/A
Hertfordshire M25, M1 and A1(M) closures confirmed for this week
M25, M1 and A1(M) all set to close for roadworks in Hertfordshire this week
Hertfordshire M1, M25 and A1(M) all set to close for roadworks this week
A1(M)
Tuesday, April 28
- Northbound closure junction 3 to 4, full closure.
- Southbound closure junction 6 to 4, two lanes.
Wednesday, April 29
- Northbound closure junction 3 to 4, full closure.
- Southbound closure junction 6 to 4, two lanes.
Thursday, April 30
- Northbound closure junction 2 to 3, one lane.
- Northbound closure junction 3 to 4, full closure.
- Southbound closure at junction 4, full closure.
- Southbound closure junction 6 to 4, two lanes.
Friday, May 1
- Southbound closure junction 4 to 2, full closure.
- Southbound closure junction 6 to 4, two lanes.
Saturday, May 2
N/A
Sunday, May 3
- Southbound A1 closure junction with M25 to junction with A5135, full closure.
- Southbound closure at junction 1, full closure.
- Southbound closure junction 3 to 1, one lane.
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