The greatest concern is the ever increasing cost of the Central Subway Project, now projected to be $176,000 per foot of construction all for less than 2 miles of track. The estimate has ballooned from a projected $648 million (in November 2003) to $1.578 billion today.

The project, already behind schedule, is slated to be completed by 2019. By that time, the cost could triple and San Francisco taxpayers would be on the hook to make up the difference.

(If you like Muni fare increases and service cuts you'll love the Central Subway)