The Sellwood bridge spanning the Willamette River in Portland is in dire need of repair, on a Federal bridge safety rating, it was a 2 (on a scale of 0 - 100). It was in such bad shape that it was held together with glue, literally. It carried a lot of traffic daily and if they closed it for two years, the commute would have been miserable, so instead they moved it to temporary piers 60 feet downstream.
It weighs 6.8 million pounds and is 1,100 feet long. It took 50 hydraulic jacks to lift it and nudge it down the rails to the temporary location 60 feet downstream. A new bridge will be build on the original spot.
The article has a time-lapse video of the move.
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