State Route 559
Route information
Maintained by ODOT
Length	16.63 mi[1] (26.76 km)
Existed	1937–present
Major junctions
South end	SR 29 in Mechanicsburg
Major intersections	US 36 near Woodstock
North end	SR 287 near North Lewisburg
Location
Country	United States
State	Ohio
Counties	Champaign, Logan
Highway system
Ohio State Highway System Interstate US State Scenic
← SR 558 → SR 560

State Route 559 (SR 559) is a north–south state highway in the central portion of the U.S. state of Ohio. The southern terminus of the highway is at the signalized junction of State Route 29 and State Route 4 in downtown Mechanicsburg. Its northern terminus is at a T-intersection with State Route 287 approximately 4 miles (6.4 km) northwest of North Lewisburg.

Route description

State Route 559 runs through the eastern portion of Champaign County and the southeastern quadrant of Logan County. The route connects Lewisburg to Mechanicsburg and Middleburg. No part of the highway is included within the National Highway System, a network of routes deemed most important for the nation's economy, mobility and defense.^[2]

History

Established in 1937, State Route 559 was originally routed along the same alignment that it occupies today through Champaign and Logan Counties. The highway has not experienced any major changes to its routing since its inception.^[3][4]

Major intersections

County	Location	mi[1]	km	Destinations	Notes
Champaign	Mechanicsburg	0.00	0.00	SR 4 (Sandusky Street) / SR 29 east (South Main Street)	Southern end of SR 29 concurrency
		0.27	0.43	SR 29 west (West Main Street)	Northern end of SR 29 concurrency
	Goshen Township	2.44	3.93	SR 161 – Irwin, Mutual
	Rush Township	5.42	8.72	US 36 – Urbana, Marysville
	North Lewisburg	11.80	18.99	SR 245 east (Maple Street) / East Street	Southern end of SR 245 concurrency
		12.01	19.33	SR 245 west (Maple Street) / South Sycamore Street	Northern end of SR 245 concurrency
Logan	Zane Township	16.63	26.76	SR 287
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus