Ohio State Route 73

State Route 73

Route information

Maintained by ODOT

Length:

134.74 mi^[1] (216.84 km)

Existed:

1924 – present

Major junctions

West end:

East end:

Location

Counties:

Highway system

Ohio highways
Interstates • U.S. Routes • State Routes

State Route 73 is an east–west state highway in the southern portion of the U.S. state of Ohio. Its western terminus is on U.S. Route 27 in Oxford. State Route 73’s eastern terminus is in Portsmouth at U.S. Route 23; this is also the southern terminus of State Route 104, and the two state routes run concurrent for over 6 miles (9.7 km) from this point north. Once State Route 73 enters Scioto County, it is designated as the Scenic Scioto Heritage Trail by the Ohio Department of Transportation.^[2]

In combination with State Route 32, Route 73's easternmost 31 miles are part of the quickest route between Cincinnati and Portsmouth.

Cities and villages along route

Great Miami River - Middletown, Franklin
Excello Locks - Historic Remains of a lock on the Miami-Erie Canal near the intersection of 73 and S. Main St. in Middletown, Ohio. Much of the route between Trenton and Franklin follows the original path of the Miami and Erie Canal.
Middletown Historical Society Canal Museum
La Comedia Dinner Theatre - Springboro
Little Miami River - Waynesville
Little Miami Bike Trail - Corwin
Caesar Creek Lake - Warren County
Caesar Creek State Park - Warren, Clinton County
Serpent Mound
Brush Creek State Forest
Shawnee State Forest
Scioto River
Ohio River

1924 – Original route established^[3]; originally routed from Franklin to 1-mile (1.6 km) west of Portsmouth (dually certified with State Route 104 from 1-mile (1.6 km) north of Coles Park to 1-mile (1.6 km) west of Portsmouth before 1926)^[4].
1926 – Extended to 2 miles (3.2 km) east of Middletown along the previous State Route 6; State Route 104 certification removed^[4].
1934 – Extended to the U.S. Route 127 about 1-mile (1.6 km) northwest of Seven Mile^[4].
1936 – Extended to Oxford^[4].
1952 – Dually certified with State Route 104 from 1-mile (1.6 km) north of Coles Park to 1-mile (1.6 km) west of Portsmouth^[4].
1957 – From Excello to Franklin upgraded to 4 lanes^[4].
1962 – From 1-mile (1.6 km) north of West Portsmouth to 1-mile (1.6 km) west of Portsmouth upgraded to 4 lanes^[4].
1966 – From Franklin to Interstate 75 upgraded to 4 lanes^[4].
1972 – Extended to Portsmouth (dually certified with State Route 104)^[4] along the former alignment of U.S. Route 23.
1979 – From Interstate 75 to Springboro upgraded to divided highway^[4].
1980 – From Trenton to Excello upgraded to divided highway^[4].