Case Study: I-680 Bridge Demolition Engineering for Caltrans Video
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Caltrans is improving roadway infrastructure in California by widening and strengthening its overpass system. This makes the original overpass defunct and requires the demolition of the older infrastructure.
Caltrans is challenged with removing the original bridge without disturbing the flow of traffic, the solution is to piece-meal the demo, weakening the bridge until the entire overpass can be removed overnight. Zenith Engineers was tasked with assessing the structural capacity of the bridge to determine the maximum size of the excavator that can remove the deck portion the quickest.