The south spoke of the Grove Plaza in Downtown Boise and the heavily used 8th Street crosswalk over Front street will close starting Sept. 19.
Those corridors are scheduled to re-open Dec. 1, according to a news release from a communications firm working with Capital City Development Corporation, Boise's urban renewal agency and owner of the Grove.
The closure, scheduled to take effect at 5 a.m. on Monday, will allow the construction of a concourse that connects Boise Centre, located on the Grove Plaza's southwest side, to a new building that contains a ballroom on the Grove's east side. The concourse is the second phase of an expansion of Boise Centre, the city's main convention venue since the late 1990s.
The concourse project will cost up to $7 million, said Pat Rice, executive director of Greater Boise Auditorium District, which owns Boise Centre.
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The third and final expected phase of the Boise Centre expansion will be a renovation of space in the existing Boise Centre building. Design work has already begun on that phase, Rice said, and demolition should start in early December. In a best-case scenario, Rice said, the $12.5 million renovation would be done by Christmas.