Boston’s Big Dig, which started around the time I left the area and is still dragging on over ten years afterwards, hit a much publicized major milestone Saturday with the full opening of the I-93 tunnel. There is still much work to be done, however. It turns out the fanfare opening was actually an “interim opening” and the tunnel, technically, is not complete. Another lane needs to be finished. Commuters can expect lane closures and accompanying traffic headaches for a while longer. The dismantling of the elevated Central Artery will also take some time as the work is loud and nearby residents would like to sleep. It’s going to be at least another year before the final major projects are completed.