elevated freeway and railroad

Columns supporting the 280 Freeway in the Dog Patch neighborhood of San Francisco.­

The columns have been braced with steel sleeves for seismic retrofit.­ This gives them more resistance to compression stress in case of an earthquake.­

280 caltrain columns concrete dog patch elevated freeway infrastructure pillars railroad tracks rails railway tracks urban
Southern Embarcadero Fwy, San Francisco, CA 94107, USA

Unclassified photos taken in San Francisco Bay Area.­