California’s population is expected to reach nearly 60 million by 2050; with more than half residing in Southern California. The LA Times recently reported that So Cal could anticipate more than $100 billion in infrastructure investments to accommodate this growth. Planning studies suggest the six county region would need as much as $140 billion over the next several decades to keep the roads congestion free. In addition, cargo movement is expected to increase by 400 percent over the same period. Because of the scarcity of developable land, especially in and around Los Angeles county, officials are looking at decked freeways, tunnels, tolls, and trains as potential solutions to improve capacity.