October 16, 2021

Engineers test new plan to prevent Millennium Tower from sinking

SAN FRANCISCO (KGO) — Engineers are testing a new plan to prevent San Francisco’s Millennium Tower from sinking additional into the bottom.

The Millennium Tower opened in 2009 and has sunk no less than 18 inches, which resulted in a $100 million restore.

In August, repairs have been halted after crews found the tower had sank one other inch.

“It’s reasonable to expect that there might be some lessons learned along the way,” stated Emily Guglielmo of the Structural Engineers Affiliation of Northern California. “Some things we need to mitigate so it is not uncommon for a project to hit pause to revise installation procedures.”

On Tuesday, crews put in a 36-inch metal cylinder 100 ft into the bottom on Fremont Avenue.

Engineers imagine the metal cylinder will cut back erosion and vibrations from development and automobiles.

Crews have deemed the constructing structurally protected.