M3 roadworks

Live and upcoming roadworks, closures and disruption on the M3 across the UK, from Department for Transport Street Manager data. Updated 3 August 2026.

• M3 J3 Join Sw

  National Highways · 27 Jul 2026 → 21 Aug 2026
  Medium
• M3 J3 Leave Sw

  National Highways · 27 Jul 2026 → 21 Aug 2026
  Medium
• M3 J4 Leave Ne

  National Highways · 3 Aug 2026 → 4 Aug 2026
  Medium
• M3 J3 Leave Sw

  National Highways · 4 Aug 2026 → 6 Aug 2026
  Medium
• M3 J3 Leave Ne

  National Highways · 4 Aug 2026 → 6 Aug 2026
  Medium
• M3 From J A339 Roundabout To J6 Roundabout Sw

  National Highways · 4 Aug 2026 → 5 Aug 2026
  Medium
• M3 J4 Leave Sw

  National Highways · 7 Aug 2026 → 8 Aug 2026
  Medium
• M3 J4 Leave Ne

  National Highways · 11 Aug 2026 → 12 Aug 2026
  Medium
• M3 J4 Leave Sw

  National Highways · 11 Aug 2026 → 12 Aug 2026
  Medium
• M3 J13 Leave Ne

  National Highways · 11 Aug 2026 → 14 Aug 2026
  High
• M3 J13 Join Ne

  National Highways · 11 Aug 2026 → 14 Aug 2026
  Medium
• M3 J13 Leave Ne

  National Highways · 11 Aug 2026 → 14 Aug 2026
  High
• M3 From J A339 Roundabout To J6 Roundabout Sw

  National Highways · 17 Aug 2026 → 19 Aug 2026
  Medium
• M3 J13 Leave Ne

  National Highways · 19 Aug 2026 → 20 Aug 2026
  Medium
• M3 From J2 Leave Sw To M25 J12 Join S

  National Highways · 14 Sept 2026 → 18 Sept 2026
  High
• M3 From J2 Leave Sw To M25 J12 Join S

  National Highways · 14 Sept 2026 → 18 Sept 2026
  High
• M3 J3 Leave Ne

  National Highways · 29 Sept 2026 → 2 Oct 2026
  Medium
• M3 J3 Leave Sw

  National Highways · 29 Sept 2026 → 2 Oct 2026
  Medium

Councils on the M3