Emergency I-495 Bridge Closure in Deleware
FYI Clicky
Forum Discussion
The descriptions that I saw yesterday were of steel pilings driven into flood plain sediments, with a concrete cap on top (not massive foundation), and the columns on top of that. I did not see mention of the pilings reaching to bedrock. That is possible. But regardless, soil loading could displace or damage pilings.
Green Bay WI had a similar bridge closure last September (a column sunk a couple of feet). That and neighboring columns were given support collors, and the bridge reopened in January.
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http://www.delawareonline.com/story/news/local/2014/06/04/contractor-says-dirt-piles-placed-bridge/9971917/
This News Journal article mentions the pilings being anchored in bedrock. But also talks about the possibility of them shifting.
Green Bay WI had a similar bridge closure last September (a column sunk a couple of feet). That and neighboring columns were given support collors, and the bridge reopened in January.
-------------------
http://www.delawareonline.com/story/news/local/2014/06/04/contractor-says-dirt-piles-placed-bridge/9971917/
This News Journal article mentions the pilings being anchored in bedrock. But also talks about the possibility of them shifting.
