Ohio State Route 198

State Route 198
Route information
Maintained by ODOT
Length:	12.51 mi[1] (20.13 km)
Existed:	1924 – present
Major junctions
South end:	US 33 near Wapakoneta
North end:	SR 117 near Spencerville
Location
Counties:	Auglaize, Allen
Highway system
Ohio highways Interstates • U.S. Routes • State Routes ← SR 197 SR 199 →

State Route 198 is a north–south state highway in the western portion of the U.S. state of Ohio. Its southern terminus is at an interchange with U.S. Route 33 just south of Wapakoneta, which is also the western terminus of State Route 67 and the southern terminus of State Route 501; its northern terminus is at State Route 117 nearly 4 miles (6.4 km) east of Spencerville.

History

• 1924 – Original route established^[2];originally routed from St. Marys to 4 miles (6.4 km) west of Spencerville along current State Route 116^[3].
• 1926 – Rerouted to its current alignment, which was the former alignment of State Route 116, and from its current northern terminus to the village of Southworth along previously and currently unnumbered roads^[3].
• 1946 – Truncated at its current northern terminus; its former alignment north to Southworth decertified^[3].
• 1961 – Extended 2 miles (3.2 km) south from Wapakoneta (from its terminus at the former alignment of U.S. Route 33) to its current terminus via a previously unnumbered road^[3].

Sources

1. ^ Ohio Department of Transportation. "Technical Services Straight Line Diagrams". http://www.odotonline.org/techservapps/SLD/default.htm. Retrieved April 30, 2010. 
2. ^ Explanation of the Ohio State Highway System (The Unofficial Ohio State Highways Web Site) by John Simpson
3. ^ ^{a b c d} Route 198 (The Unofficial Ohio State Highways Web Site) by John Simpson