State Highway 1 just outside of Oamaru will be closed for several hours tomorrow (Monday 23 February) to allow crews to carry out inspections at the Deborah Rail Underpass.

SH1/Oamaru-Alma Road, between McLeods Road and Bulleid Road, will be closed from 9am to 3pm tomorrow.

People are asked to plan their travel accordingly, and to follow sign-posted detours at the site.