Complex sentence: The local partners were responsible for 25 percent of the cost and another 25 percent was paid by the State of Florida, which included the cost of track improvements, construction of train stations, and of purchasing rail cars.
Split into simpler sentences: The local partners are responsible for 25 percent of the cost and another 25 percent is to be paid by the State of Florida. This includes the cost of track improvements, construction of train stations, and of purchasing rail cars.