History
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- 1924 – Original route established; originally followed current US 23 alignment from Portsmouth to Waldo, and current SR 423 from Waldo to Marion.
- 1926 – Alignment from Portsmouth to Marion certified as US 23; SR 4 realigned south of Marion to its current southern terminus in Cincinnati, replacing the former SR 6 from Cincinnati to Middletown, the former SR 52 from Middletown to 3 miles (4.8 km) south of Milford Center, and the former SR 38 from Marysville to Marion.
- 1959 – Alignment from Dayton to Springfield rerouted and upgraded to freeway; segment through Fairborn around Wright-Patterson Air Force Base designated as SR 444.
- 1967 – Segment from SR 201 to SR 444 upgraded to freeway.
Read more about this topic: Ohio State Route 4
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“History is the present. That’s why every generation writes it anew. But what most people think of as history is its end product, myth.”
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“It is remarkable how closely the history of the apple tree is connected with that of man.”
—Henry David Thoreau (1817–1862)