So a big milestone is coming up for Boston’s Big Dig project. The new northbound section of the Central Artery Tunnel will be opening on Sunday. That means if you’re coming from the south of Boston on I-93, you can drive straight under the city and emerge onto the beautiful new Zakim bridge. Currently, you drive through a small tunnel in the south of Boston and then the rest of the drive through the city takes place on an ugly, green, rusting elevated highway.

The southbound side of the highway won’t be opening until some time next year.

Just for fun, he’re a look at one of the lovely interchanges in the current project… this is the interchange between I-90 (The Mass Pike) and I-93… spaghetti roads, galore!