The public is being asked to avoid Riccarton Road in Christchurch due to concerns over the stability of two buildings.
Cordons have been put in place at a number of intersections along Riccarton Road and traffic congestion is growing so motorists are advised to find alternative routes.
One of the commercial buildings causing concern is at the intersection of Riccarton Road, Straven Road and Clarence Road. This building is having to be demolished. The second commercial building is on Riccarton Road close to the intersection of Rotherham Street and is likely to have to have its facade removed.
Cordons are likely to be in place for most of the afternoon. Further advisories will be issued once the cordons are lifted.