A friend visited Seattle lately. She was astonished when I told her Washington has no state income tax. "Why are your roads so much better? Surely your sales tax is higher?" No, lower. "How are you able to do it then?
Vastly less graft and corruption.
Unfortunately, graft and corruption are one of the principle aspects of mass transit in the United States. Seattle spent $125m expanding the monorail without breaking ground on anything.