'Carmageddon': Los Angeles freeway shuts down

Pneumatic hammers from above and below continue the demolition of two lanes of Mulholland Drive bridge over Interstate 405 in Los Angeles Saturday, July 16, 2011. Ramps to the normally clogged Interstate 405 were shut down Friday evening before the entire roadway was closed at midnight, setting the stage for a 53-hour bridge demolition project that will test whether this car-dependent city can change its driving habits for a weekend. (AP Photo/Reed Saxon)

July 16, 2011 4:09:09 PM PDT
A 10-mile stretch of one of the nation's busiest freeways has turned into a virtual ghost road.