This past weekend, Boston’s “Big Dig” passed a major milestone. The tunnel for northbound route 93 was opened, as well as the new Leonard P. Zakim Bunker Hill Bridge. I’ve been admiring this bridge since I moved here. It is gorgeous and unlike any other bridge that I have seen. Especially at night, when it is gleaming and lit with colored lights. Hopefully, Ed and I will get to ride on it this week.