The live cameras may be down for the count, but aerial images from architectural photographer Hunter Kerhart showcase progress on the Sixth Street Viaduct replacement.

Crews are currently in the process of demolishing the 3,500-foot long bridge, which was compromised by an alkali-silica reaction.  Past studies indicated that the condition put the 1932 structure at a high risk of collapse during a major seismic event.

One of the bridge's iconic metal arches was removed earlier this month, and will eventually be incorporated into a park that is planned beneath the viaduct.

The $449-million replacement, designed by Michael Maltzan Architecture and HNTB, is slated for completion in 2019.

Image: Michael Maltzan Architecture

From the Web

Senior Affordable Housing Opens Near Orange County's Great Park

The two-building development features 157 apartments.

Developers Related California and FivePoint have opened a new affordable housing complex near Irvine's Great Park.  The project, called Luxaira, features 157 residential units catering to low-income seniors.  It is the second senior affordable development to be built in the Great Park neighborhoods by Related, FivePoint, and collaborator RCC Charitage.  To date, more than 500 affordable housing units have been built around the park in four separate projects.