Funen Ærø, Tåsinge, and a number of smaller islands. Funen is linked to Zealand, Denmark's largest island, by the Great Belt Bridge, which carries both trains and cars. The bridge is in reality three bridges; low road and rail bridges connect Funen to the small island of Sprogø in the middle of the Great Belt, and a long road suspension bridge (the second longest in the world at the time of opening) connects Funen the rest of the way to Zealand, paralleled by a rail tunnel. Two bridges connect Funen to the Danish mainland, Jutland. The Old Little Belt Bridge was
Little Belt Bridge precise calculations, and molds both for the piles and each end of the bridge were first constructed of wood and later manually filled with cement from buckets. When the new Little Belt Bridge came into use in 1970, the old bridge lost its function as the main traffic line for cars between Funen and Jutland; however, it is still used as the only railway bridge between Jutland and Funen and thus the only railway line connecting Jutland with Zealand as well, as well as to carry traffic between Fredericia and Middelfart and their neighbouring villages. The bridge requires constant maintenance.