The NZ Transport Agency says a substantial programme of safety and strengthening work is ramping up along the alternate state highway route from Picton to Christchurch, via the Lewis Pass.
"While NZTA crews are working hard to clear slips generated by the November 14 earthquakes on the inland Mt Lyford road and on State Highway 1 south of Kaikoura, work is also hitting high gear on the Lewis Pass alternate highway," regional performance manager Pete Connors said.
An immediate focus was being put on upgrading State Highway 63 near St Arnaud in the weeks leading up to the very busy Christmas-New Year travel period.
"Crews will be resealing the road at 14 separate sites on the highway leading into Christmas, with repairs and road-widening happening at several sites.
"This work is under way and will be completed before Christmas. Design work is also under way to widen the narrowest section of SH63 near Kawatiri Junction known as Howard Narrows."