IIRC the Massachusetts Turnpike is, mile-for-mile, the most expensive road in the state. The Turnpike Authority was chartered as an independent agency that cou

IIRC the Massachusetts Turnpike is, mile-for-mile, the most expensive road in the state. The Turnpike Authority was chartered as an independent agency that could float bonds for road construction, and once the bonds were paid off, ownership of the Turnpike would pass to the state government. So the Authority keeps itself perpetually in debt.