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Ohio State Route 420: Map


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State Route 420 or OH 420 is a north-south state highway in the northwestern portion of the U.S. state of Ohiomarker. The highway is divided in its entirety (though it is an at-grade divided highway). Its southern terminus is an interchange with the US 20/US 23 duplex near the hamlet of Lemoyne, nearly southeast of Perrysburgmarker. The route’s northern terminus is at the southern terminus of I-280, where the two routes interchange with the Ohio Turnpike; this interchange is almost north of OH 420’s southern terminus. The route’s main purpose is to link drivers from US 20/US 23 to I-280 and the Ohio Turnpike.



  • 1970 – Original route certified; the entire route was OH 120 from 1955 to 1970. No significant changes to its routing since its certification.
  • Fall 2006 - The new freeway interchange at the southern terminus fully opens to traffic, replacing the confusing (and somewhat dangerous) at-grade interchange that was in use for many years.


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