Beams crack in San Fran’s new $2B transit center

The transportation hub opened Aug. 11 after two decades of work. It was closed on Sept. 25

TRD LOS ANGELES /
Oct.October 06, 2018 04:00 PM
Steel beams being installed in 2014. (Credit: courtesy TJPA, Pixabay)

Crews are scrambling at the Transbay Transit Center in downtown San Francisco after a second cracked beam was discovered in as many days.

The $2.2-billion transportation hub opened Aug. 11 and was heralded as a “flashy centerpiece of city infrastructure” two decades in the making, as the San Francisco Chronicle reported. But the center was quickly closed Sept. 25 after the first cracked beam was discovered.

The Transbay Joint Powers Authority (TJPA) – which built and now operates the center – said the tear was 2.5 feet long and 4.5 inches deep on a 60-foot beam that holds a 5.4-acre rooftop park above a bus deck. Then workers found a second, slightly smaller crack on a different beam that runs parallel to the first. Crews are now shoring up the building by installing steel supports to reduce the pressure on the beams.

Officials don’t know what caused the cracks yet, but several possibilities are considered likely: fabrication problems, installation error, too much weight, or an issue in the initial design. The beams are among more than 22,000 tons of steel in the building’s skeleton.

In a statement, Mayor London Breed said “someone needs to be held accountable once the cause is determined.”

According to the Architect’s Newspaper, the companies involved are Pelli Clarke Pelli Architects, the architect of the center and nearby Salesforce Tower; structural engineering firm Thorton Tomasetti, which also acted as the engineer of record along with performing some construction work; the project contractor was a joint venture between Webcor and Obayashi; and, finally, the fabrication of the steel beams was contracted out to Stockton-based Herrick Corp. by Skanska USA Civil West of New York and the TJPA.

Around the transit center, the city plans to create 6 million square feet of office space, 4,400 housing units, 100,000 square feet for retail, and 11 acres of park space. [SF Chronicle]–Gregory Cornfield


Related Articles

arrow_forward_ios
A rendering of the project

Chinese developer Oceanwide takes $276M loss on megaproject; CEO is out

LA promo

Coming Soon: The Real Deal Los Angeles’ Winter 2020 issue!

From left: Howard Schwimmer and Michael S. Frankel, with 1601 W. Mission Boulevard and 2757 E. Del Amo Boulevard (Credit: Google Maps)

Rexford Industrial adds to LA portfolio with $100M in acquisitions

Andrew McDonald and At Mateo in the Arts District

Cushman’s West Coast chief talks expansion, DTLA market, the death of the starving baby broker & more

3339 Exposition Blvd. and Asher Luzzatto

Luzzatto Co. assembling creative office hub in West Adams

Jason Illoulian and the Cemex plant

Faring makes $30M assemblage play on WeHo/LA border

From left: Nuveen CEO Vijay Advani, Graymark founder/CEO Brian Hecktman

Graymark, Nuveen pay $97M for El Segundo creative office

La Mirada industrial building

Clarion pays $77M for La Mirada industrial project

arrow_forward_ios
Loading...