Denbighshire County Council is updating residents on the highway closure on Rhyl High Street.
The measure is being undertaken to secure 123-125 High Street following an inspection by structural engineers which deemed the building to be unsafe.
The Council has a legal duty to ensure the safety of the public and this will involve the demolition of the building.
As part of the demolition, scaffolding will be put up to facilitate the work due to the condition of the building and its proximity to adjoining premises.
This demolition is expected to take up to three months to complete.
Cllr Hugh Evans OBE, Leader of Denbighshire County Council, said: “The closure of the highway was undertaken to ensure the safety of the public after structural engineers deemed the building was in a dangerous condition.
“We will be carrying out work to demolish the building as quickly as we are able.
“Officers have spoken with businesses and taxi operators and we will be keeping in contact with them and discussing how we can support them throughout.
“We understand this has been difficult time for traders given the short notice around the closure and we want to thank them and members of the public for their understanding during this time.
“Officers have considered ways of keeping one lane open to traffic but unfortunately this causes risks to vehicles and pedestrians in particular at the junction at the end of the High Street, and consequently we had to make the regrettable decision to close both lanes to traffic.
“The area remains open for pedestrians and we want to remind members of the public that businesses are operating as normal.”
Arrangements are in place to allow access for deliveries for businesses Monday to Saturday while the Council is also looking at alternative arrangements for the taxi rank in the area.