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The left bore was blocked, and we were told 20 to 30 cars were stuck in the tunnel.
The first signs of smoke were reported around 9:50 a.m. Tuesday.
The incident was then elevated to a SIG Alert -- meaning a major traffic issue -- shortly after 10 a.m.
The CHP says the car fire was inside bore 2. Crews were able to gain access to bore number 2 thru bore number 1 and then were able to extinguish the vehicle fire quickly.
About 75 to 100 people self-evacuated, according to the Oakland Fire Department. Some motorists left their cars inside the tunnel.
The cause of the vehicle fire, which reportedly involved a pickup truck, remains under investigation.
No injures have been reported. All lanes reopened by 12:45 p.m.