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This is a bridge with some very unusual designs. Its continuous pony truss spans are most noteworthy. The continuous truss spans have "towers" at the pier points making the bridge look like a cantilevered truss, although the spans appear to be rigid and functioning as continuous (no suspended spans). The long series of approach spans at the northeastern end of the bridge are another story. Eight of the spans are curved concrete deck girders, located immediately after the truss spans. These spans have three girder lines under the deck. These girder spans include a cantilevered design. The remaining approach spans at the northeastern end of the bridge are all concrete slab spans, 19 in total.
An earlier bridge at this location mostly collapsed in the 1906 earthquake. It included a pin-connected through truss design. Based on the description of the bridge that this 1949 bridge replaced it appears that what was left of the bridge after the 1906 earthquake was repaired and/or rebuilt with similar details. Remains of caissons from this previous bridge remain below the bridge to this day.
Bridge Photo-Documentation Original / Full Size Photos |
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Bridge Photo-Documentation Mobile Optimized Photos |
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CarCam: Northwestbound Crossing Full Motion Video |
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing. |
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CarCam: Northeastbound Crossing Full Motion Video |
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing. |
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