An independent engineering review team has given its nod to the San Francisco Dept. of Building Inspection regarding permitting of the proposed $100-million structural shoring scheme for the 645-ft-tall Millennium Tower—which has settled 17.3 in. over more than a decade.

San Francisco’s review of pile scheme to shore 645-ft-tall Millennium Tower will take months

The 58-story Millennium Tower in the Transbay district of San Francisco, which has sunk 18 in. and is tilting 2 in., is under even more scrutiny for possible structural defects since a window on the 36th floor cracked.

The 645-ft Millennium Tower—the tallest reinforced concrete structure in the Western United States—is sinking and tilting, and the building owner places the blame squarely on the adjacent Transbay Transit Center project.