A1 Planned Roadworks: Closure & Delays at A1 northbound at a minor junction between A603 and A421

Carriageway closures

A1 northbound Tempsford to Black Cat Roundabout carriageway closure

Road Network: A1 (North bound)

Affected Sectors:

  • Sector 1: A1 northbound at a minor junction between A603 and A421

Status & Certainty: Scheduled Maintenance (Probable)

Restrictions: Mandatory compliance required.

Carriageway & Lane Capacity

  • Total Closed Lanes: 1
  • Lanes Remaining Open: 0

Schedule Window

  • Scheduled Start: 07/10/2026 at 21:00
  • Estimated Completion: 08/10/2026 at 05:00
  • Schedule data last synced/updated by National Highways on: 01/10/2026 at 00:36
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