The Port Authority of New York & New Jersey was formed in 1921 as the first bi-state agency in the nation, in order to develop important transportation links between the two states. With jurisdiction over the Port District - a region within a radius of approximately 25 miles of the Statue of Liberty - the Port Authority is responsible for developing: the George Washington Bridge; the Outerbridge Crossing; the Goethals and the Bayonne bridges; the Lincoln Tunnel; upgrading and managing the Newark, LaGuardia, and John F. Kennedy International airports; and constructing the World Trade Center. The Port Authority is completely financially self-supporting, receiving no tax revenue, and at the end of fiscal year 2013, the Port Authority had $4.4 billion in gross operating revenues.