State Route 263 (Ohio Pre-1927)
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State Route 170 (SR 170) is a north–south running state route located in Mahoning and Columbiana counties in northeast Ohio. It runs within a few miles of the Pennsylvania border for much of its route as it passes through the eastern parts of the two counties. The southern terminus is at an interchange with
U.S. 30 U.S. Route 30 or U.S. Highway 30 (US 30) is an east–west main route in the system of the United States Numbered Highways, with the highway traveling across the northern tier of the country. With a length of , it is the third longest ...
,
State Route 7 The following highways are numbered 7. For roads numbered A7, see list of A7 roads. Route 7, or Highway 7, may refer to: International * AH7, Asian Highway 7 * European route E07 * European route E007 Afghanistan *Kunduz-Khomri Highway (A7) ...
, and State Route 11 near Calcutta, and the northern at
U.S. 62 U.S. Route 62 or U.S. Highway 62 (US 62) runs from the Mexican border at El Paso, Texas, to Niagara Falls, New York, near the Canadian border. It is the only east-west United States Numbered Highway that connects Mexico and Canad ...
in
Youngstown Youngstown is a city in the U.S. state of Ohio, and the largest city and county seat of Mahoning County. At the 2020 census, Youngstown had a city population of 60,068. It is a principal city of the Youngstown–Warren metropolitan area, which ...
. ODOT extended the northern terminus from the previous point of Interstate 680, changing signs on July 16 and 17, 2008.


History

In 1924, it became the original state highway where it routed from East Palestine to Petersburg. In 1931 the highway extended to East Liverpool along a previously unnumbered road. Later in 1962 it was extended to north of North Kingsville along previous route 90. The road was truncated at north of Poland in 1970.Route 170
by John Simpson
In 2008, it extended to U.S. 62 in Youngstown along the former Route 625.


Major junctions


References

{{Reflist
170 Year 170 ( CLXX) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Clarus and Cornelius (or, less frequently, year 923 ''Ab urbe condita ...
Transportation in Columbiana County, Ohio Transportation in Mahoning County, Ohio