ROCKLAND, Maine — The demolition of an existing building, that will pave the way for construction of a new complex for Center for Maine Contemporary Art, is scheduled to begin next week.

Rockland Main Street Inc. sent out a notice last week that advised downtown businesses that during the weeklong demolition, Winter Street, which runs off Main Street, will be one-way. Demolition is expected to begin Sept. 8.

Excavation for the new foundation for the arts center on Winter Street is tentatively scheduled for October. Construction is expected to take up to 16 months once the foundation is completed. The grand opening is scheduled for spring 2016.

The city is also planning to have work done to separate sewer and storm drains along Winter Street during the construction project.

The $2.5 million project received the Rockland Planning Board approval on April 1. The project calls for an 8,200-square-foot building with a 2,200-square-feet glass-enclosed courtyard.

The existing one-story building being demolished is a 12,213-square-foot structure that was built in 1923.