Ohio State Route 257

State Route 257
Route information
Maintained by ODOT
Length:	26.19 mi[3][4][5] (42.15 km)
Existed:	1926[1][2] – present
Major junctions
South end:	US 33 / SR 161 in Dublin
North end:	SR 47 in Prospect
Location
Counties:	Franklin, Delaware, Marion
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 256 SR 258 →

State Route 257 (SR 257, OH 257) is a 26.19-mile (42.15 km) north–south state highway in the central portion of the U.S. state of Ohio. The highway's southern terminus is in the northwestern Columbus suburb of Dublin at a signalized intersection with U.S. Route 33 (US 33) and SR 161. SR 257 has its northern terminus at a T-intersection with SR 47 on the western village limits of Prospect.

SR 257 was created in the middle of the 1920s. This mainly two-lane highway follows the eastern side of the Scioto River from Dublin to its junction with US 42. After crossing over the river with the U.S. highway, SR 257 then parallels the river to the west up to Prospect.

Route description

Along its way, SR 257 travels through northwestern Franklin County, western Delaware County and the extreme southern part of Marion County. There are no segments of SR 257 that are included within the National Highway System (NHS). The NHS is a network of highways identified as being most important for the economy, mobility and defense of the nation.^[6]

History

The SR 257 designation was applied in 1926. Originally, the highway was routed along its present southernmost alignment along the eastern banks of the Scioto River between Dublin and its northeastern junction with US 42.^[1][2]

In 1935, SR 257 was extended via a short concurrency with US 42 across the Scioto River, then north along its present alignment along the western side of the river to a new northern terminus at SR 37 west of Delaware.^[7][8] Then, two years after its first northward extension, SR 257 was extended to the north again, this time to its present northern terminus at SR 47 in Prospect.^[9][10]

SR 257 was designated the General Thaddeus Kosciusko Memorial Highway in 1975.^[11]

Major intersections

County	Location	Mile[3][4][5]	Destinations	Notes
Franklin	Dublin	0.00	US 33 SR 161	Southern terminus at signalized intersection
Delaware	Liberty Township	3.94	SR 750 east	Signalized intersection marking western terminus of SR 750
	Concord Township	10.72	US 42 north	Signalized intersection marking northeastern end of the US 42 concurrency
		11.29	US 42 south SR 745 south	Signalized intersection marking southwestern end of the US 42 concurrency; northern terminus of SR 745
	Scioto Township	14.75	US 36
		17.18	SR 37
Marion	Prospect	26.19	SR 47	Northern terminus at T-intersection
1.000 mi = 1.609 km; 1.000 km = 0.621 mi      Concurrency terminus •      Closed/Former •      Incomplete access •      Unopened

References

	Ohio portal
	U.S. Roads portal

1. ^ ^{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 2011-04-28. 
2. ^ ^{a b} Ohio Department of Highways and Public Works (August 1926) (MrSID). Map of Ohio Showing State Routes (Map). Cartography by ODHPW. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1926a.sid. Retrieved 2011-04-28. 
3. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 257, Franklin County". http://www.odotonline.org/techservapps/SLD/pdf_files/frasr0257r.pdf. Retrieved 2006-12-06. 
4. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 257, Delaware County". http://www.odotonline.org/techservapps/SLD/pdf_files/delsr0257r.pdf. Retrieved 2006-12-06. 
5. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams: SR 257, Marion County". http://www.odotonline.org/techservapps/SLD/pdf_files/marsr0257r.pdf. Retrieved 2006-12-06. 
6. ^ Federal Highway Administration (December 2003) (PDF). National Highway System: Ohio (Map). http://www.fhwa.dot.gov/planning/nhs/maps/oh/oh_Ohio.pdf. Retrieved 2011-04-28. 
7. ^ 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 2011-04-28. 
8. ^ 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 2011-04-28. 
9. ^ Ohio Department of Highways (1936) (MrSID). Official Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1936a.sid. Retrieved 2011-04-28. 
10. ^ 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 2011-04-28. 
11. ^ "Ohio Administrative Code: ORC 5533.29 General Thaddeus Kosciusko memorial highway.". http://codes.ohio.gov/orc/5533.29. Retrieved 2011-09-19.