Uploaded on 2014-12-03 by macengr

[1]: https://edxuploads.s3.amazonaws.com/14176199355817817.jpg Above, you can see the rivers and bridges of Pittsburgh. The rivers have always been a key transportation node in Pittsburgh, funneling cargo and supplying drinking water. Naturally, the bridges are necessary to connect the different parts of the city together, but can also act as limiters - where there are no bridges, intercommunication between neighborhoods is reduced.