Overview
- National Highways confirmed late Tuesday that a collision just after 10:30pm on 4 August blocked the M1 northbound between junction 16 (Northampton) and junction 18 (Crick/Rugby) and involved two lorries with one overturned.
- All emergency services are at the scene and Northamptonshire Police are managing safety while southbound lanes have been partially closed to allow crews to access the incident.
- A signed hollow-triangle diversion asks drivers to leave the M1 at J16 and rejoin at J18 via the A45, A5 and A428, redirecting traffic onto local roads through Flore and Kilsby.
- National Highways and traffic officers say specialist recovery and possible emergency resurfacing work make the situation complex and likely to keep the motorway closed into the morning, with recovery teams already on site.
- The closure is causing long delays and local congestion that will affect freight and commuter journeys so motorists are urged to follow the diversion signs and allow extra travel time.