The Parkfield Coalinga Bridge crosses over the San Andreas Fault in Parkfield, CA. The rail of the bridge got distorded from the shift between the two tectonic plates. Surveying shows a drift at the rate of as much as 2 inches per year. The town of Parkfield, located on the San Andreas Fault in central California, is one of the worlds most seismically active areas. It has been the site of an intensive earthquake study since the late 1970's and a team of scientists recently reached the faults active zone through a 2-mile deep borehole. This project, named SAFOD, is a major step in learning more about earthquakes and maybe predicting them.
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