Toller Near Monopoly Causes Trucks to Pay $30 to Cross a Bridge

Tollers won't admit it, but congestion relief is far from a primary goal. It's about revenue and finding just the right choke points to cash in big time. A prime example is the George Washington Bridge(GWB) which crosses the Hudson River between New Jersey and Manhattan.
As of this writing 5 axle trucks, one of the most common configurations for 18 wheelers,are charged $6 per axle. A whopping $30 to cross a bridge built in1931! It is a one way toll and discounts can be had, but for most over-the-road(OTR) drivers there's no guarantee they'll use the GWB on the way out of Manhattan and discounts add a level of hassle factor and wasted time to take advantage. And by the way, during my time as an OTR driver, plenty of time was spent in congestion trying to get across the infamous GWB.
Where in the world does all that toll money go?
Where are the alternate routes built with all that toll money?
Excerpt: "For instance, it costs $30 cash to cross the George Washington Bridge into New York City, any time of the day."
http://www.heavydutytrucking.com/2005/04/042a0504.asp