SAN FRANCISCO (AP) – The new eastern span of the San Francisco-Oakland Bay Bridge opens nearly 25 years after the Loma Prieta earthquake damaged the old span. Here are some of the $6.4-billion structure’s specifications:
_ It is the longest self-anchored suspension span in the world (2,047 feet) and features a single, mile-long main cable connected to either end of the bridge’s roadway that supports the structure’s weight.
_ 200 steel suspender ropes attached to the span’s main cable and roadway complete the span’s self-anchoring system, compressing and lifting the roadway into place.
_ The main tower is 525-feet high and comprised of four legs designed to move with the shaking of an earthquake. The legs are held together by “shear-link” beams designed to take the brunt of quake damage and be easily replaced.
_ The main tower’s foundation is anchored by 13 concrete pilings driven about 200 feet into the bedrock beneath San Francisco Bay.
_ A bicycle and pedestrian path that connects Oakland to Yerba Buena Island will be only partially open at first while crews demolish a section of the old bridge so the final path to the island can be completed.
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