Friends, family and co-workers are remembering the woman who was described as being "loved by so many."
The toll collector was working in her booth at the Bay Bridge on Saturday when a truck plowed into it. Han was killed. This morning, many of Han's fellow Caltrans wore orange ribbons in her honor.
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"It's a sad day for us and certainly a sad day for Si Si's family. And Caltrans as a work family just wants to support her co-workers as well as her family as much as we possibly can," said Caltrans Director, Malcolm Dougherty.
Han leaves behind a husband and a 10-year-old daughter. The truck driver from Foster City was arrested. Daniel Burk faces DUI and vehicular manslaughter charges.
HOW TO HELP: Click here to help Si Si's family