Building a bridge from Alaska and Russia?

[mheslep]

Due to seismic activity in the Bering Strait, the tunnel doesn't sound like such a great idea. ...

I mentioned in my first insertion that this project would be along the 'Ring Of Fire', so there would be an obvious engineering challenge.

I'm not so sure. The Strait is well North of the Pacific Ring of Fire, i.e North of the Pacific plate. Both sides of the Strait are on the North American Tectonic Plate
http://en.wikipedia.org/wiki/File:Plates_tect2_en.svg

 

[turbo]

Here you go.

http://geology.geoscienceworld.org/cgi/content/abstract/25/11/979

 

[mheslep]

Here you go.

http://geology.geoscienceworld.org/cgi/content/abstract/25/11/979

Interesting, I'd never heard of independent seismic 'blocks' before.

 

[turbo]

Interesting, I'd never heard of independent seismic 'blocks' before.

Yep, and apparently, they not only lift, subduct, and slide, but they can rotate with respect to the the surrounding continental plate(s). Not a good situation for the longevity of the Bering Tunnel.