50 year to 100 year plan not common but still could be done

50 year plan
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Detroit’s 50-Year Plan

http://harvardmagazine.com/2007/03/harvards-50-year-plan-html

100 year plan
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China launched a secret 100-year modernization program that deceived successive U.S. administrations into unknowingly promoting Beijing’s strategy of replacing the U.S.-led world order with a Chinese communist-dominated economic and political system, according to a new book by a longtime Pentagon China specialist.
http://freebeacon.com/national-security/chinas-secret-strategy-exposed/


A Wildly Detailed 100-Year Plan for Getting Humans to Mars
http://www.wired.com/2015/08/wildly-detailed-100-year-plan-getting-humans-mars/
Space travel has advanced at an unbelievable rate in the 20 years since the plan was last updated. Commercial ventures have joined the effort, headed by the likes of Elon Musk, Robert Bigelow, and Richard Branson. “What I never foresaw was the development of people who were so filthy rich they could have their own space program,” Jones says. “That changed everything.”