This 25 year bicycle plan from the Massachusetts Executive Office of Transportation, made in cooperation with the U.S. Department of Transportation and the Federal Highway Administration, (the principle funding source for bike paths) has the "primary purpose to develop a prioritized plan of on-and off-road bicycling improvements in order to implement a statewide bicycling network."  The Plan encompasses 740 miles of primary and secondary bicycle routes which make up 7 Bay State Greenway Corridors.  The first 10 years of the plan are dedicated to bike plans either currently advertised or funded.