The Golden Gate City's drivers spent 55 hours stuck in traffic in 2007. San Francisco actually saw a drop in annual hours of delay from 58 to 55 from 2006 to 2007. Forbes puts the worst bottleneck in the San Francisco-Oakland area at Interstate 238 Northbound at Calif. 185/14th St. and Mission Blvd. And travelers will go an average of 19.6 miles per hour in traffic congestion. Seismic upgrades and repairs to the area's Bay Bridge, forcing its closure, increased traffic woes in the fall of 2009 as commuters had to seek alternate routes to San Francisco.