XPost: misc.transport.road   
   From: kozelsm@comcast.net   
      
   "Gary V"  wrote:   
   >   
   > Scott M. Kozel wrote:   
   >   
   > > "The Detroit-Windsor Tunnel is the only vehicular international   
   > > subaqueous border crossing in the world".   
   > >   
   > > SMK:  So they don't consider the English Channel Tunnel to be a   
   > > "vehicular" tunnel, it seems.  It is a railroad tunnel, but it carries   
   > > high-capacity "roll-on/roll-off" shuttle trains for cars, trucks and   
   > > buses to utilize.   
   >   
   > "Subaqueous" may mean more than just under water - it may refer to the   
   > construction method.  They dug a ditch, sunk a pipe into it, sealed it   
   > up, and pumped out the water.  Different than boring it through rock.   
      
   http://dictionary.reference.com/browse/Subaqueous   
      
   All of the definitions refer to being "under water" or "underneath the   
   water".   
      
   The construction method term is "immersed sunken tube" for the process   
   whereby tunnel segments are laid in a trench dredged in the bottom of   
   the watercourse, and backfilled over with earth.  The end result is a   
   tunnel through earth under the floor of the watercourse, which is   
   conceptually similar to a shield-bored tunnel.   
      
   --   
   Scott M. Kozel    Highway and Transportation History Websites   
   Virginia/Maryland/Washington, D.C. http://www.roadstothefuture.com   
   Philadelphia and Delaware Valley   http://www.pennways.com   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)