The Seattle Times weighs in on what we don't know—and some of the troubling stuff we do know—about building a downtown tunnel. Some of the report may look familiar, but this part caught my attention:

Supporters take comfort in documents showing that the budget includes a $415 million cushion for risk, contingencies and inflation. However, the state Department of Transportation (DOT) likely will not have that big a rainy-day fund. It turns out the budget also will have to cover the cost of roughly $200 million in road connections at the north and south tunnel entrances and the street grid near Seattle Center. Unless bids are low, some of that cushion the state is counting on will be spent — before any emergencies.

Read all of Mike Lindblom's piece here.