Route 123
From route 251, 1 mile north of St. Martin to route 4 in Germantown.
Counties:
Brown, Clinton, Warren, Montgomery
Length:
43 miles
General Direction:
North/South
History of route 123:
Original state highway.
Originally routed from Blanchester to Franklin.
1 mile north of St. Martin to 2 miles north of St. Martin was unnumbered
before 1950.
2 miles north of St. Martin to Blanchester was unnumbered before 1946.
Franklin to Germantown was unnumbered before 1931.
Extended to 2 miles west of New Lebanon in 1940.
Extended to 2 miles north of St. Martin by 1946.
Extended to 1 mile north of St. Martin by 1950.
Germantown to 2 miles west of New Lebanon decertified by 1966.
Truncated at Germantown by 1966.