M4 Planned Roadworks: Closure & Delays at M4 eastbound within J4B

Other

M4 Eastbound Jct 5 to Jct 4b lane 1,2 closure

Road Network: M4 (East bound)

Affected Sectors:

  • Sector 1: M4 eastbound within J4B

Status & Certainty: Scheduled Maintenance (Probable)

Restrictions: Mandatory compliance required.

Carriageway & Lane Capacity

  • Total Closed Lanes: 1
  • Lanes Remaining Open: 3

Schedule Window

  • Scheduled Start: 20/11/2026 at 23:00
  • Estimated Completion: 21/11/2026 at 06:00
  • Schedule data last synced/updated by National Highways on: 13/11/2026 at 23:31
Scroll to Top