Illinois Route 160 is a north–south highway in southwestern Illinois. Its southern terminus is at Illinois Route 15 south of Addieville, and its northern terminus is at Illinois Route 140 east of Alhambra. This is a distance of . In 1959 it was used on the current Illinois 160 from New Baden to Highland; in 1960, it was extended south to New Memphis. In 1965, it was extended north to its current northern terminus. Finally, in 1967, Illinois 160 was extended one last time to its current southern terminus, to a new road for Illinois 15.

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