This is essentially Seattle&#x27;s version of Boston&#x27;s Big Dig.<p>There are zero guarantees that this won&#x27;t happen again, no one is willing to say who&#x27;s on the hook for cost overruns, and there&#x27;s still no plan about what to do if the viaduct happens to collapse while they&#x27;re working on the tunnel.<p>Fwiw, I voted against this project, and I will be amazed if it is finished.