Today, four cranes made their way underneath the San Franciscan Bay Bridge, necessitating closure of the bridge temporarily. The closure was to prevent the weight of the cars from lowering the bridge span, an undesireable effect considering that clearance between the cranes and the Bay Bridge is only 22 inches -- a very squeeky fit, indeed.

Since San Franciscans are always on the lookout for a good party, several folks showed up to witness the crane passage, and the sky was full of helicoptors.

Luckily, no one breathed and the cranes made it safely through.

(See related story in SF Gate.)