Throwback Thursday – Central Subway Blog

Throwback Thursday – June 11, 2015

central_subway — Thu, 11 Jun 2015 22:54:57 +0000

Early 2013 aerial view of former mixed-use business and residential building at Stockton and Washington streets. The Chinese Historical Society of America and Students from the Chinatown YMCA contributed artwork for the building wrap design that promoted the future entrance to the Chinatown Subway Station.

Toward the end of 2013, building demolition was completed and heavy equipment moved in to begin excavation work.

Upon completion of the station roof in spring 2015, the Contractor’s next phase of work includes restoration of Washington Street and interior work of the Chinatown Station.

Throwback Thursday – May 7, 2015

central_subway — Thu, 07 May 2015 22:44:45 +0000

Close to two years ago to date, the Central Subway project welcomed Tunnel Boring Machines (TBMs) Mom Chung and Big Alma to begin their 120 foot per-day dig to construct the subway tunnel extension.

Their trek was commemorated in different ways:

San Francisco Mayor Ed Lee toured the beginnings of the tunneling project.

The Mayor signed Tunnel Boring Machine Mom Chung at the onset of her 1.7 mile journey across San Francisco.

Last year, the two TBMs completed their journey under the streets of San Francisco. Staff poses at the completed end point known as the retrieval shaft.