Ohio State Route 350

State Route 350
Route information
Maintained by ODOT
Length:	27.41 mi[3][4] (44.11 km)
Existed:	1935[1][2] – present
Major junctions
West end:	SR 123 near Lebanon
	US 22 near Clarksville US 68 near Wilmington
East end:	SR 28 / SR 73 in New Vienna
Location
Counties:	Warren, Clinton
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 349 SR 353 →

State Route 350 (SR 350, OH 350) is a 27.41-mile (44.11 km) east–west state highway in the southwest portion of the U.S. state of Ohio. The highway has its western terminus at SR 123 approximately 2.50 miles (4.02 km) southeast of Lebanon, and just southeast of the interchange Interstate 71 (I-71) has with SR 123 at its Exit 32. The eastern terminus of State Route 350 is in New Vienna, following its nearly 2-mile (3.2 km) long duplex with SR 73, where the two routes meet SR 28 at a signalized intersection.

Route description

SR 350 passes through portions of Warren and Clinton Counties along its way. No portion of this state highway is included within the National Highway System (NHS). The NHS is a network of highways determined to be most important for the nation's economy, mobility and defense.^[5]

History

The SR 350 designation was applied in 1935. The highway originally ran entirely within Warren County, along its current alignment from its western terminus at SR 123 southeast of Lebanon to its junction with the duplex of U.S. Route 22 (US 22) and SR 3 west of Clarksville.^[1][2]

In 1938, SR 350 was extended east along a previously un-numbered roadway into Clinton County, where its new endpoint was at its junction with SR 73 northwest of New Vienna.^[6][7] One year later, SR 350 was extended via a short duplex southeast with SR 73, then northeasterly along a new state highway alignment to Sabina, where it intersected the US 22/SR 3 duplex a second time, and came to an end.^[8] No sooner than that extension took place, in 1940 the majority of it was reversed when a southward extension of SR 729 replaced the segment between SR 73 and US 22/SR 3. Consequently, in lieu of SR 350 being reinstated to its 1938 eastern terminus at SR 73, it was instead routed to continue southeast along SR 73 from the new southern terminus of SR 729 into New Vienna, where the route came to an end at its present eastern terminus where SR 73 meets SR 28.^[9]

Major intersections

County	Location	Mile[3][4]	Destinations	Notes
Warren	Turtle Creek Township	0.00	SR 123	Western terminus
	Washington Township	7.90	US 22 SR 3
Clinton	Clarksville	9.88	SR 132 south SR 133 south	Signalized intersection marking common northern termini of SR 132 and SR 133
	Vernon Township	13.41	SR 730
	Washington Township	17.10	US 68	Grade separation with connector roadways on the west side
	Clark Township– Washington Township	20.64	SR 134
	Green Township	25.07	SR 73 west	T-intersection marking northwestern split of SR 73/SR 350 duplex; SR 73 joins from the northwest
		25.30	SR 729 north	T-intersection marking southern terminus of SR 729
	New Vienna	27.41	SR 28 SR 73 east	Eastern terminus at signalized intersection; SR 73 continues solo to the southeast; SR 28 crosses east–west
1.000 mi = 1.609 km; 1.000 km = 0.621 mi      Concurrency terminus •      Closed/Former •      Incomplete access •      Unopened

References

1. ^ ^{a b} Ohio Department of Highways (1934) (MrSID). Map of Ohio Showing State Highway System (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1934a.sid. Retrieved 2011-09-19. 
2. ^ ^{a b} Ohio Department of Highways (1935) (MrSID). Official Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1935a.sid. Retrieved 2011-09-19. 
3. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 350, Warren County". http://www.odotonline.org/techservapps/SLD/pdf_files/warsr0350r.pdf. Retrieved 2011-09-19. 
4. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 350, Clinton County". http://www.odotonline.org/techservapps/SLD/pdf_files/clisr0350r.pdf. Retrieved 2011-09-19. 
5. ^ Federal Highway Administration (December 2003) (PDF). National Highway System: Ohio (Map). http://www.fhwa.dot.gov/planning/nhs/maps/oh/oh_Ohio.pdf. Retrieved 2010-11-13. 
6. ^ Ohio Department of Highways (1937) (MrSID). Official Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1937a.sid. Retrieved 2011-09-19. 
7. ^ Ohio Department of Highways (1938) (MrSID). Official Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1938a.sid. Retrieved 2011-09-19. 
8. ^ Ohio Department of Highways (1939) (MrSID). Official Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1939a.sid. Retrieved 2011-09-19. 
9. ^ Ohio Department of Highways (1940) (MrSID). Official Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1940a.sid. Retrieved 2011-09-19.