Ohio State Route 251

State Route 251
Route information
Maintained by ODOT
Length:	4.84 mi[3] (7.79 km)
Existed:	1925[1][2] – present
Major junctions
South end:	US 50 near St. Martin
North end:	US 68 near St. Martin
Location
Counties:	Brown, Clinton
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 249 SR 252 →

State Route 251 (SR 251, OH 251) is a north–south state highway located in the southwestern portion of the U.S. state of Ohio. Its southern terminus is at U.S. Route 50 about 1 mile (1.6 km) south of St. Martin in northern Brown County. The northern terminus of State Route 251 is at U.S. Route 68 nearly 2.50 miles (4.02 km) northwest of St. Martin in southwestern Clinton County.

Route description

The path of State Route 251 takes it through northern Brown County and southwestern Clinton County. State Route 251 is not included as a component of the National Highway System, a network of highways identified as among the most important for the country's economy, mobility and defense.^[4]

History

When it debuted in 1925, State Route 251 was routed along what is now U.S. Route 68 between U.S. Route 50 in Fayetteville and the current northern terminus of State Route 251 south of St. Martin. U.S. Route 68's predecessor, State Route 53, duplexed with U.S. Route 50 east to the current southern terminus of State Route 251, and then followed the entire present alignment of State Route 251 before resuming its northward path along the current alignment of U.S. Route 68.^[1][2] In 1930, State Route 251 and State Route 53 swapped alignments, such that State Route 53 now followed a straight alignment north out of Fayetteville that U.S. Route 68 utilizes today, and State Route 251 now appeared along its present-day routing.^[5][6]

Major intersections

County	Location	Mile[3]	Destinations	Notes
Brown	Perry Township	0.00	US 50	Southern terminus.
		2.64	SR 123	Southern terminus of SR 123 at T-intersection.
Clinton	Jefferson Township	4.84	US 68	Northern terminus at T-intersection.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

1. ^ ^{a b} Ohio Department of Highways and Public Works (August 1924) (MrSID). Map of Ohio Showing State Routes (Map). Cartography by ODHPW. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1924a.sid. Retrieved 2011-01-19. 
2. ^ ^{a b} Ohio Department of Highways and Public Works (August 1925) (MrSID). Map of Ohio Showing State Routes (Map). Cartography by ODHPW. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1925a.sid. Retrieved 2011-01-19. 
3. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams". http://www.odotonline.org/techservapps/SLD/default.htm. Retrieved 2010-04-25. 
4. ^ Federal Highway Administration (December 2003) (PDF). National Highway System: Ohio (Map). http://www.fhwa.dot.gov/planning/nhs/maps/oh/oh_Ohio.pdf. Retrieved 2011-01-18. 
5. ^ Ohio Department of Highways (August 1929) (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/otm1929a.sid. Retrieved 2011-01-19. 
6. ^ Ohio Department of Highways (1930) (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/otm1930a.sid. Retrieved 2011-01-19.