The Heathcote northbound off-ramp from State Highway 74/Tunnel Road in Christchurch will be closed tonight and tomorrow night for scheduled maintenance.

The off-ramp will be closed for sump clearing works from 11pm tonight, reopening tomorrow at 5am, and then for the same hours from 11pm tomorrow.

Road users should plan their journey accordingly, follow the sign-posted detour on site and allow extra time for travel.