" JimH" jimh_osudad@yahooDOT comREMOVETHIS wrote in message
...
A water bridge for boats built over a river. Pretty amazing!

http://www.funonthenet.in/content/view/223/31/

http://www.dw-world.de/dw/article/0,,990878,00.html


http://www.nycanal.com/canaltour/mapindex.html
Another aqueduct, in Palmyra, (hometown) lots of summer fishing here as a
kid. Apparently, hydraulic engineering back in the early 1800's, wasn't up
to task of controlling natural streams and the canal, hence the numerous
devices to keep the waters separate.