Expert road crews will be carrying out emergency road materials testing in Red Lion Square.
The critical work will happen tomorrow (Wednesday May 25) and the road closure in and around the square will be in effect from 10am until 12pm.
A full route diversion will be signed.
The roads will have to be closed because some of the materials testing will be carried out on the live northbound traffic lane in the area.
Situations like this, at such short notice, are extremely rare and whilst unavoidable disruption will occur for road users in the area, the council work teams will ensure a return to normality as soon as possible.
Karen Cassar, assistant director for highways at LCC said: “We are sorry for the inconvenience that these material tests will cause and for the late notice of the road closure in Red Lion Square.
“Our on-site team has uncovered questions about the road materials which need clear answers and these can only come about through these tests.
"Rather than postpone the works further we will close the road for two hours to carry out the tests and then resume to the original plan of works for the area. We are doing this to absolutely minimise the disruption to road users as much as possible.
“Whilst this situation is not ideal, we appreciate the efforts of all concerned. I want to thank everyone effected for their patience in this matter whilst we carry out these tests.”
For the latest information on road closures and works happening on the road network across Lincolnshire in live timing as it’s happening, visit www.lincolnshire.gov.uk/roadworks.