State Route 503 (SR 503) is a north–south

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 southwestern quadrant of the U.S. state of Ohio. The southern terminus of SR 503 is at

U.S. Route 127 U.S. Route 127 (US 127) is a north–south U.S. Highway in the eastern half of the United States. The southern terminus of the route is at US 27 in Chattanooga, Tennessee. The northern terminus is at Interstate 75 (I-75) near G ...

(US 127) in Seven Mile. Its northern terminus is at a T-intersection with SR 121 on the eastern limits of the village of Wayne Lakes.

Route description

Along its way, SR 503 travels through northern Butler County, eastern

Preble County Preble County is a County (United States), county located in the U.S. state of Ohio. As of the 2020 United States Census, 2020 census, the population was 40,999, down 3.0% from the 2010 United States Census, 2010 census population of 42,270. Its ...

and southern

Darke County Darke County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 51,881. Its county seat is Greenville. The county was created in 1809 and later organized in 1817. It is named for William Darke, an officer in the ...

. There are no segments of SR 503 that are included as a part of the National Highway System, a network of highways identified as being most important for the economy, mobility and defense of the nation.

History

The SR 503 designation was assigned in 1937. The highway was established along the routing that it maintains to this day between US 127 in Seven Mile and SR 121 in Wayne Lakes. No changes of major significance have taken place to the routing of the highway since its inception.

Major intersections

References

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503 __NOTOC__ Year 503 ( DIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Volusianus and Dixicrates (or, less frequently, year 125 ...

Transportation in Butler County, Ohio Transportation in Preble County, Ohio Transportation in Darke County, Ohio