The demolition of Christchurch's city centre resumes on Monday after a two-week break over the holidays.
It also marks the closure of the red zone walkway, which has been open to visitors wanting to see some of the city's most damaged parts close up.
Army personnel manning the red zone cordon estimate that between 60 and 80 people an hour visited during the holiday period.
A spokesperson for the Canterbury Earthquake Recovery Authority says it is constantly reviewing opportunities to reduce the red zone cordon where it is safe and practical to do so.
The spokesperson says the authority hopes its contractors will complete the redevelopment of Cathedral Square by the end of 2015.
However, it says the work depends on the speed of building demolitions, infrastructure work and the construction of nearby anchor projects such as the proposed Convention Centre Precinct.