I know live maps has one. but its really only available in big cities. I know some nasty urban rails....like 52 kinks but they are in the middle of no where.
interesting concept. but the best stuff will always be found where you least expect to look. you wont find good urban if your specifically looking for it in my opinion, you'll just see it.
So I can watch them sloth each other at night? I don't know Callison...that sounds a little too scandalous. But then again it wouldn't be the first time ZAPP!
this whole handrail, with a river on the other side. http://maps.google.com/maps?f=q&hl=en&geocode=&q=boise,+idaho&sll=47.627107,-122.304783&sspn=0,359.981332&ie=UTF8&ll=43.609354,-116.20935&spn=0.002742,0.004667&t=h&z=18&layer=c&cbll=43.609871,-116.209334&panoid=RCcwG0cbbrwLB19fdzKY5w&cbp=12,242.78816337818765,,0,19.35593303484889
http://maps.google.com/?ie=UTF8&ll=40.881244,-73.909606&spn=0,359.997031&z=19&layer=c&cbll=40.881324,-73.909426&panoid=p19gJsVA2H8_HRIO40bjxQ&cbp=12,314.93376943029995,,0,-1.4283167476416456
why i love the bronx...
its at least 70 kinks... grass on the left side the whole way, totally try-able at any level of kink...