State Route 166 (SR 166) is an east–west
state highway
A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...
in the northeastern portion of the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...
of
Ohio
Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta ...
. The western terminus of State Route 166 is at a T-intersection with
U.S. Route 6
U.S. Route 6 (US 6), also called the Grand Army of the Republic Highway, honoring the American Civil War veterans association, is a main route of the U.S. Highway system. While it currently runs east-northeast from Bishop, California, to P ...
just over northeast of
Chardon. Its eastern terminus is at
State Route 534 about west of
Rock Creek.
Route description
State Route 166 travels through the northeastern portion of
Geauga County
Geauga County ( ) is a county in the U.S. state of Ohio. As of the 2020 census, the population was 95,397. The county seat is Chardon. The county is named for an Onondaga or Seneca language word meaning 'raccoon', originally the name of the ...
and the western part of
Ashtabula County
Ashtabula County ( ) is the northeasternmost county in the U.S. state of Ohio. As of the 2020 census, the population was 97,574. The county seat is Jefferson. The county was created in 1808 and later organized in 1811. The name Ashtabula deriv ...
. No segment of this highway is a part of the
National Highway System, a system of highways identified as most important for the economy, mobility and defense of the nation.
History
The debut of State Route 166 took place in 1923. The original routing of State Route 166 consisted of the existing route of State Route 166 from its current western terminus northeast of
Chardon to its junction with
State Route 528, and State Route 528 from that intersection north to that highway's current northern terminus north of
Madison Madison may refer to:
People
* Madison (name), a given name and a surname
* James Madison (1751–1836), fourth president of the United States
Place names
* Madison, Wisconsin, the state capital of Wisconsin and the largest city known by this ...
.
In 1939, State Route 166 was re-routed. From the current junction of State Route 166 and State Route 528, State Route 166 was routed east, replacing what was formerly designated as State Route 522, to the intersection that marks State Route 166's current eastern terminus at
State Route 534 west of
Rock Creek. In turn, State Route 528 was extended northward, replacing what was the north-south leg of State Route 166.
Major intersections
References
External links
{{Attached KML, display=title,inline
State Route 166 Endpoint Photos
166
Transportation in Geauga County, Ohio
Transportation in Ashtabula County, Ohio