Southbound and northbound A1 closures planned as part of Grantham relief road works | Updated: 15:27, 05 February 2021 The A1 southbound and northbound will be closed overnight for seven days from next week. The overnight closures will allow the final 14 plus tonne bridge beams to be lifted into place as part of the new Grantham Southern Relief Road. A full night-time closure of the southbound A1, between Harlaxton and Little Ponton, 8pm to 6am, will be in place starting on Wednesday, (February 10) for seven evenings subject to suitable weather. Southbound and northbound A1 closures planned as part of Grantham relief road works. Photo credit: thedroneman.net (44291642)