Overpass Near Oakland Collapses After Truck Explodes - New York Times:

The crash, which occurred at approximately 3:40 a.m. Pacific time, sent flames soaring hundreds of feet into the air, according to witnesses. The overpass carrying eastbound lanes of Interstate 580 overhead quickly buckled, causing it to collapse onto part of Interstate 80 below. The accident occurred near the approach to the Bay Bridge, which connects San Francisco with Oakland, Berkeley and other cities on the east side of San Francisco Bay. Several major highways converge at that spot, a complex multilevel interchange known as the MacArthur Maze.

Note THE MAZE MELTDOWN / First commute day: Free rides as transit leaders work on plan:

All transit systems are offering free rides today to ease the congestion anticipated on the region's freeways following the collapse of a major section of the MacArthur Maze.

Useful links:

• map of where the overpass collapsed
• Tanker fire destroys part of MacArthur Maze / 2 freeways closed near Bay Bridge
• Transit, highway officials searching for alternative routes
• NWZCHIK : Freeway Collapse
• 511.org - Traffic: Breaking News & Construction