State Route 50 (Ohio pre-1927)

State Route 48
Route of SR 48 highlighted in red
Route information
Maintained by ODOT
Length:	83.03 mi (133.62 km)
Existed:	1926 – present
Major junctions
South end:	SR 132 near Goshen
	I-71 in South Lebanon I-75 in Dayton I-70 near Englewood
North end:	SR 66 near Houston
Location
Counties:	Clermont, Warren, Montgomery, Miami, Shelby
Highway system
Ohio Highways Interstate U.S. State Scenic ← SR 47 SR 49 → ← US 50 SR 50 SR 51 →

State Route 48 (SR 48) is a north–south highway in Ohio that runs from SR 132 near Goshen to SR 66 near Houston, passing through Dayton.

In the early 20th century, SR 48 was assigned to completely unrelated routes within the state. From 1923 to 1927, it was the designation given to Barnesville–Hendrysburg, Barnesville–Woodsfield, and Woodsfield–Sistersville roads in eastern Ohio, now designated SR 800. Present-day SR 48 was previously signed as SR 50, and before that as Dayton–Covington and Dayton–Lebanon roads. (See 1923 Ohio state highway renumbering and 1927 Ohio state highway renumbering).

In I Love Lucy episode #111, "First Stop", the Ricardos and the Mertzes travel this route, although they were headed to Cincinnati.

State Route 48 Temporary (SR 48-T, also called Future SR 48 and Bypass 48) is a 1.87-mile-long (3.01 km) partial bypass of Lebanon running from the SR 48 / SR 123 interchange to an intersection of US 42 and Miller Road. The four-lane divided roadway is a northern continuation of a divided highway segment of SR 48. The route was created by 1971 when a high-speed bypass of Lebanon was created. SR 48-T is not signed as such; the northbound direction is signed as "To US 42 north" and the southbound direction is signed as "To SR 48 south."