> No, it doesn't, but it used to.  Mostly throughout Shitamachi.  Take a 
> look at the places that are well inland that have names like -- 
> Kobunacho (just for one example) and nani-nani-bashi where there is 
> nothing for a bridge to cross.  Also take a look at maps now and maps of 
> Edo and you'll see that a lot of the larger roads are covered-over 
> waterways.
> 
> Canals became the place of choice to scrape off the wreckage in 1923, 
> 1945, and 1962 (for za Orimpikkusu).  Then, instead of using the canal 
> rights of way for a decent kosoku system, they built ugly flyovers 
> because they produced more profit for road construction companies.


You see alot of this in Tokyo unfortunately
http://www.photopassjapan.com/images/img%202598%20tokyo%20kanda%20kudanshita%20-%20highway%20canal%20overpass.jpg