Raining sparks and glowing, the bridge takes on a Las Vegas quality in these nighttime glimpses of the round-the-clock effort to detach the old deck piece and secure the new bypass. (Photo: Noah Berger)

The Bay Bridge is eerily empty. (Photo: Noah Berger)

(Photo: Noah Berger)

Crews help guide the massive deck piece as it slowly slides across tracks (in red) lubricated with dish soap. (Photo: Noah Berger)

In a finishing touch, workers imprint the pavement with the new, slower speed limit in force along the bridge bypass. (Photo: Karl Nielsen)

(Photo: Noah Berger)

Viewed from underneath, the prefab bypass truss looks like a geometric modern art sculpture. (Photo: Noah Berger)

(Photo: Tom Paiva)

With the bypass in place, the disconnected stub of the old East Span will be demolished
to allow the new East Span (at far left) to connect to the Yerba Buena Island tunnel. (Photo: © 2009 Barrie Rokeach)

Ironworkers ready one of the saddles that will ease the strain on the failed eyebar. (Photo: Karl Nielsen)

In this aerial view, the old deck piece is sitting to the side, and the replacement truss (whitish colored) is starting to slide into place. (Photo: © 2009 Barrie Rokeach)

See more photos at: http://www.mtc.ca.gov/projects/bay_bridge/closure.htm