Similarly the Canadian province of Ontario leased it's only toll highway for 99 years to an international group, for an amount it currently earns in tolls every ~2 years. Fun.
You're missing the bigger picture though. By doing so they managed to look like they had balanced the budget in an election year. That's what really matters here.
Fair. At the current rate, the revenue takes two years to cover the original cost. The net profit takes 6. The margins are quite good due to consistent price increases.