Recently, I had a chance to go see the new Art of the Brick exhibit at the Carnegie Science Center. While it was all rather impressive, what really caught my eye was the piece inspired by one of the many things Pittsburgh is known for: bridges.
Some of the most iconic are the three sisters; three identical bridges that stand just before the Allegheny meets the Ohio. Unlike other bridges these are not only named for the streets they continue. Rather these are named after three icons to the area. Who are they, and what did they bring to Pittsburgh?