Both carriageways of the M1 at junction 19 are set to be closed for three consecutive nights from Monday as part of efforts to improve the Catthorpe interchange.
During the closures, heavy steel beams will be lifted into place to enable construction of the new direct link from the M6 to the A14, as part of the Highways Agency’s £191m junction improvement.
Highways Agency project manager Ivan Marriott said:“Linking the M6 and A14 will greatly improve the flow of traffic at Catthorpe, and work will be progressing over the coming months to create a new direct link underneath the M1 itself.
“Drivers should plan their journeys and allow extra time while construction takes place.”
The M1 northbound will be closed from the exit for the M6, northbound traffic will be diverted on to the M6 at junction 19, the A426, the A5 and the A4303 to re-join the M1 at junction 20.
Traffic travelling south on the M1 will be diverted from junction 20 taking the same diversion but in reverse.
Traffic travelling through to the A14 will be able to leave the M1 at junction 19 as usual.
The closures will take place between 9pm and 6am on Monday, Tuesday and Wednesday.
A contingency closure for 18 September is planned in case the work over-runs.