• Source: 1962 Ohio state highway renumbering

In 1962, the Ohio Department of Highways implemented the system of Interstate Highways that had been approved by the states in 1956.
The State Route numbers 70, 71, 74, 75, 77, 80, 90, 270, 271, 275, 277, 280, 290, 675, and 680 conflicted with new designations, so the State Routes with those numbers were renumbered.




Other renumberings due to new interstate designations after 1962


In 1972, due to the designation of I-76 in Ohio, Ohio State Route 76 had the part north of Beverly renumbered to Ohio State Route 83 and the rest became a southward extension of Ohio State Route 339.
In 1973, due to the designation of I-670 in Ohio, Ohio State Route 670 had the portion east of Ohio State Route 313 become an extension of it and the rest was renumbered to Ohio State Route 761.




References

Kata Kunci Pencarian:

• 1962 Ohio state highway renumbering
• 1923 Ohio state highway renumbering
• Numbered highways in Ohio
• 1945 Florida State Road renumbering
• 1923 Virginia state highway renumbering
• 1964 state highway renumbering (Washington)
• 1927 Ohio state highway renumbering
• 1953 New Jersey state highway renumbering
• 1927 New Jersey state highway renumbering
• 1964 state highway renumbering (California)