The work is part of the junction improvement scheme at Catthorpe. A weekend closure is necessary for preparatory work for the construction of the new M6 to A14 link road.
Highways Agency Project Manager, Ivan Marriott, said:
The nature of the work means we have to close the road on Friday night and work right through to Sunday morning to tie a temporary carriageway into the existing A14.
The road has to be built up in layers, with each layer setting before the next level can be laid. The depth of the surfacing is such that it is not possible to complete this work during the night only.
A diversion route will be in place and clearly signed. I thank road users for their patience and advise they plan their journeys, leaving extra time.
Once completed, the new link road will benefit motorists using this busy junction by improving journey times and reducing congestion.
During the closure, traffic wishing to head east on the A14 M1 to A14 and M6 to A14 traffic will be diverted on the M1 southbound to junction 15. Traffic will then join the A45, heading northeast to join the A14 at junction 13. Traffic for Kettering will be diverted off the A45 onto the A43.
If it is not possible for work to go ahead, due to severe weather for example, the work will be re-scheduled for Friday 10 April until Sunday 12 April.
Further information on the M1 junction 19 improvement project is available on the Highways Agency website.
Members of the public should contact the Highways Agency Information Line on 0300 123 5000.
Journalists should contact the Highways Agency press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.