Ohio State Route 350

State Route 350 (SR 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 concurrency with SR 73, where the two routes meet SR 28 at a signalized intersection.

State Route 350
Route information
Maintained by ODOT
Length27.41 mi[1][2] (44.11 km)
Existed1935[3][4]–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
CountiesWarren, Clinton
Highway system
← SR 349SR 351 →

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] Between US-22 & SR 123, SR 350 is closed to trucks due to several sharp bends.

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 concurrency of U.S. Route 22 (US 22) and SR 3 west of Clarksville.[3][4]

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 concurrency southeast with SR 73, then northeasterly along a new state highway alignment to Sabina, where it intersected US 22/SR 3 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
CountyLocationmi[1][2]kmDestinationsNotes
WarrenTurtle Creek Township0.000.00 SR 123 to I-71 / Phillips Road – Lebanon, Morrow
Washington Township7.9012.71 US 22 / SR 3 – Wilmington, Cincinnati
ClintonClarksville9.8815.90 SR 132 south / SR 133 south (First Street)Northern termini of SR 132 and SR 133
Vernon Township13.4121.58 SR 730 – Wilmington, Blanchester, Cowan Lake State Park
Washington Township17.1027.52 US 68 – Wilmington, FayettevilleInterchange
Clark–Washington
township line		20.6433.22 SR 134 – Wilmington, Lynchburg
Green Township25.0740.35 SR 73 westWestern end of SR 73 concurrency
25.3040.72 SR 729 north / Thornburg Road – SabinaSouthern terminus of SR 729
New Vienna27.4144.11 SR 28 (West Street) / SR 73 east (South Street) – Hillsboro, Blanchester, GreenfieldEastern end of SR 73 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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References

KML is from Wikidata
  1. Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 350, Warren County" (PDF). Archived from the original (PDF) on 2012-05-07. Retrieved 2011-09-19.
  2. Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 350, Clinton County" (PDF). Archived from the original (PDF) on 2012-05-07. Retrieved 2011-09-19.
  3. Map of Ohio Showing State Highway System (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1934. Retrieved 2011-09-19.
  4. Official Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1935. Retrieved 2011-09-19.
  5. National Highway System: Ohio (PDF) (Map). Federal Highway Administration. December 2003. Retrieved 2010-11-13.
  6. Official Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1937. Retrieved 2011-09-19.
  7. Official Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1938. Retrieved 2011-09-19.
  8. Official Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1939. Retrieved 2011-09-19.
  9. Official Ohio Highway Map (MrSID) (Map). Cartography by ODOH. Ohio Department of Highways. 1940. Retrieved 2011-09-19.
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