The proposed Southwest Parkway toll road could generate an amazing $15 billion surplus from 2033 to 2063.
But finding the money to get started on the project is a tough sell in 2010. Click on the chart below and look at all the green. That's all the cash that will be available from tolls collected on the road after the construction debts, operation and maintenance costs and other expenses have been taken care of. You can see there's essentially no green in the first 20 years, but a whole lot of it after that.