Other
M4 Northbound Jct 4A to Jct 4 lane 1 closure
Road Network: M4 (West bound)
Affected Sectors:
- Sector 1: tM4 fast slip from M4 spur (Heathrow) northbound to M4 J4 westbound access
Status & Certainty: Scheduled Maintenance (Probable)
Restrictions: Mandatory compliance required.
Carriageway & Lane Capacity
- Total Closed Lanes: 1
- Lanes Remaining Open: 1
Schedule Window
- Scheduled Start: 13/07/2026 at 22:00
- Estimated Completion: 14/07/2026 at 05:30
- Schedule data last synced/updated by National Highways on: 12/07/2026 at 12:36