Ohio State Route 100

State Route 100
Route information
Maintained by ODOT
Length:	39.02 mi[1] (62.80 km)
Existed:	1924 – present
Major junctions
South end:	SR 309 near Iberia
	US 30 in Bucyrus
North end:	SR 53 in Tiffin
Location
Counties:	Marion, Crawford, Seneca
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 99 SR 101 →

State Route 100 concurrent with State Routes 4 and 19 near Bucyrus

State Route 100 is a north–south highway in northwestern Ohio. Its southern terminus is at State Route 309 near Iberia, and its northern terminus is at State Route 53 in Tiffin.

History

• 1924 – Original route established. Originally routed from 1-mile (1.6 km) north of Brokensword to Tiffin.^[2]
• 1939 - Extended to 12 miles (19 km) south of Bucyrus along route 19 from 1-mile (1.6 km) north of Brokensword to 3 miles (4.8 km) south of Bucyrus and an unnumbered road from 3 miles (4.8 km) south of Bucyrus to 12 miles (19 km) south of Bucyrus.^[2]

Major intersections

County	Location	Mile	Destinations	Notes
Marion	Iberia	0.0	SR 309	Southern Terminus.
Crawford	Bucyrus	9.11	SR 19	Southern terminus of SR 19 concurrency; SR 19 continues south.
		12.53	SR 4 SR 98	Southern terminus of SR 4/SR 98 concurrency; SR 4/SR 98 continue south.
		12.67	SR 98	Northern terminus of SR 98 concurrency; SR 98 continues north.
		13.46	US 30	Full-access interchange with US 30.
		14.02	SR 4	Northern terminus of SR 4 concurrency; SR 4 continues north.
	Lykens Township	21.3	SR 19	Northern terminus of SR 19 concurrency; SR 19 continues north.
		25.12	SR 103	Eastern terminus of SR 103 concurrency; SR 103 continues east.
		25.26	SR 103	Western terminus of SR 103 concurrency; SR 103 continues west.
Seneca	Melmore	30.57	SR 67	Southern terminus of SR 67 concurrency; SR 67 continues south.
		30.83	SR 67	Northern terminus of SR 67 concurrency; SR 67 continues north.
	Tiffin	35.56	US 224
		37.88	SR 231	Southern terminus of SR 231 concurrency; SR 231 continues south.
		38.23	SR 231	Northern terminus of SR 231 concurrency; SR 231 ends.
		38.29	SR 18 SR 101
		39.02	SR 53	Northern terminus.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

1. ^ Ohio Department of Transportation. "Technical Services Straight Line Diagrams". http://www.odotonline.org/techservapps/SLD/default.htm. Retrieved April 30, 2010. 
2. ^ ^{a b} Route 100 (The Unofficial Ohio State Highways Web Site) by John Simpson