http://www.youtube.com/watch?v=CCeKPGoeGV4&feature=related
The above is a good explanation of a large project we were fortunate to get. The video gets weird later, but the first few minutes are very informative.
This bridge stood over a street where my dad grew up. I remember playing under it as a child when we visited my grandfather and my aunt and uncle. My aunt and uncle's house was just a few blocks from my grandfather's home. Davis Avenue, where the bridge was located, was a block from the house where my mom grew up.
I found the whole experience to be rather surreal.
However, I did enjoy spending the better part of two weeks in those neighborhoods again while we worked. I even met a few people who remembered my dad and his brothers.