Not possible
Nice to see not all fantasies fly high above the ground, some crawl deep beneath it.
Apparently, whoever dreamt up this scheme conveniently forgot the faultline under the Bering Sea.
Now in itself, a faultline isn't much of a problem, agreed - but the challenge here is how to compensate for the 2.5cm that the Alaska and Siberia move towards each other every year.
(On the other side of the world, the Atlantic (and Iceland) are getting wider by the same amount BTW)
Fascinating plan, though.
It would almost make a great "true-story" movie in Hollywood.