The $13.6 billion figure is the fixed crossing estimate, and the drawbridge cost estimate is $14.6 billion. Each figure is accompanied in the cost estimate documents by a possible cost range from 10% less to 30% more.

Interstate Bridge Replacement price tag hits $13.6 billion in draft cost estimate document
The last official cost estimate was $6 billion in early 2023. In recent months, project officials have told state lawmakers that the new estimate wasn't ready yet.