Ohio State Route 721

State Route 721
Route information
Maintained by ODOT
Length:	17.91 mi[3] (28.82 km)
Existed:	1937[1][2] – present
Major junctions
South end:	SR 49 near Potsdam
	US 36 near Bradford
North end:	SR 185 near Bradford
Location
Counties:	Miami, Darke
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 720 SR 722 →

State Route 721 (SR 721, OH 721) is a north–south state highway located in the western portion of the U.S. state of Ohio. The southern terminus of SR 721 is at a T-intersection with SR 49 approximately 2.75 miles (4.43 km) south of the village of Potsdam. Its northern terminus is also at a T-intersection, this time with SR 185 on the Darke–Miami County Line nearly 1.50 miles (2.41 km) north of Bradford.

Route description

Along its way, SR 721's path takes it through southwestern Miami County, then along the border between Darke and Miami Counties. There is no section of SR 721 that is included within the National Highway System (NHS). The NHS is a network of highways deemed to be most important for the country's economy, mobility and defense.^[4]

History

The SR 721 designation was assigned in 1937. Throughout its history, the route has maintained the same alignment in the general vicinity of the boundary between the counties of Darke and Miami. Originally, SR 721 was an unpaved roadway from its southern terminus at SR 49 to its junction with U.S. Route 36 (US 36). The portion from that point through Bradford to its northern terminus at SR 185.^[1][2] One year after its debut, SR 721 was paved between SR 49 and Laura.^[5] By 1940, the remaining gravel portion of the highway between Laura and US 36 was paved.^[6][7]

Major intersections

County	Location	Mile[3]	Destinations	Notes
Miami	Union Township	0.00	SR 49	Southern terminus at T-intersection
	Laura	5.79	SR 571 east	Eastern split of SR 571/SR 721 duplex; SR 751 joins from the east
	Union Township	6.14	SR 571 west	T-intersection marking western split of SR 571/SR 721 duplex; SR 571 departs to the west
	Newton Township	9.59	SR 718 east	Western terminus of SR 718
Darke– Miami	Adams Township– Newberry Township	14.80	US 36
		17.91	SR 185	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

1. ^ ^{a b} 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 2011-04-07. 
2. ^ ^{a b} 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 2011-04-07. 
3. ^ ^{a b} Ohio Department of Transportation. "Technical Services Straight Line Diagrams". http://www.odotonline.org/techservapps/SLD/default.htm. Retrieved 2011-04-10. 
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 2011-04-07. 
5. ^ 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 2011-04-07. 
6. ^ Ohio Department of Highways (1939) (MrSID). Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1939a.sid. Retrieved 2011-04-07. 
7. ^ Ohio Department of Highways (1940) (MrSID). Ohio Highway Map (Map). Cartography by ODOH. http://www.dot.state.oh.us/Divisions/TransSysDev/Innovation/prod_services/Documents/StateMaps/otm1940a.sid. Retrieved 2011-04-07. 

External links

• State Route 721 Endpoint Photos