A group of workers wearing safety vests and hard hats monitor construction crews as they demolish a portion of the Mulholland Drive bridge along the 405 Freeway on Sept. 29 in Los Angeles.

A 10-mile stretch of the interstate highway — the most heavily trafficked road in the country — was shut down this weekend as part of a $1 billion freeway improvement project. But "Carmageddon 2" didn't quite live up to the hype.

An empty stretch of I-405 runs underneath the 10 freeway during Carmageddon on Sep. 29.

Although last year's Carmageddon proved to be significantly less apocalyptic than originally predicted, the city made a concerted effort this year to prevent traffic headaches by encouraging Los Angeles residents to limit weekend activities to their own neighborhoods.