At least three westbound lanes of the San Francisco-Oakland Bay Bridge are currently blocked due to a collision, according to the California Highway Patrol.
The collision reportedly occurred east of the Fremont Street exit in San Francisco.
It is not clear when the lanes will reopen.
This is a developing news story. Details may change as more information becomes available.
This post was originally posted at http://www.nbcbayarea.com/news/local/Crash-Westbound-Lanes-Bay-Bridge-509265611.html.