SEATTLE (AP) — Washington state would need to spend nearly $15 billion over the coming decade just to get its transportation system of roads, bridges and ferries to a “minimally acceptable condition,” according to a new state report.

That’s twice the current spending on preservation, which the State DOT defines as planned repairs that extend the life of an asset, as opposed to stopgap jobs like fixing potholes.

Preservation funds would grow in all four transportation packages lawmakers have proposed this legislative session, ranging from $10 billion to $22 billion, using mainly higher fuel taxes or carbon fees.