1927 Ohio state highway renumbering

This article is part of the highway renumbering series.
Alabama	1928, 1957
Arkansas	1926
California	1964
Colorado	1953, 1968
Connecticut	1932, 1963
Florida	1945
Indiana	1926
Iowa	1926, 1969
Louisiana	1955
Maine	1933
Massachusetts	1933
Minnesota	1934
Missouri	1926
Montana	1932
Nebraska	1926
Nevada	1976
New Jersey	1927, 1953
New Mexico	1988
New York	1927, 1930
North Carolina	1934, 1937, 1940, 1961
Ohio	1923, 1927, 1962
Pennsylvania	1928, 1961
Puerto Rico	1953
South Carolina	1928, 1937
South Dakota	1927, 1975
Tennessee	1983
Texas	1939
Utah	1962, 1977
Virginia	1923, 1928, 1933, 1940, 1958
Washington	1964
Wisconsin	1926
Wyoming	1927

Main article: State highways in Ohio

In early July 1927, the Ohio Department of Highways implemented the system of United States Numbered Highways that had been approved by the states in late 1926. This resulted in the renumbering of many of the state highways to avoid overlaps with the new U.S. Routes and numbers used by both classes of route. In addition to the U.S. Routes, a new State Route 6 was formed, extending West Virginia Route 6 northwest from the Ohio River at Bridgeport to Norwalk. (Route 6 later became U.S. Route 250 in both states.)

A number of State Routes - 1, 10, 13, 15, 16, 31, 49, 95, 112, 124, 130, 160, 177, 180, 223, and 256 - were entirely replaced by U.S. Routes or the new State Route 6. The numbers 6, 20, 21, 22, 23, 24, 25, 27, 30, 40, 42, 50, 52, and 127 conflicted with new designations, so the State Routes with those numbers were renamed. Some others - 28, 48, 63, 125, 126, 129, 142, and 263 - were replaced by extensions of other State Routes or new State Routes where not part of a U.S. Route. State Routes 102, 169, 249, and 250 became portions of other routes, but the numbers were reused in the immediate vicinity, mainly for the old alignment of the other route. The numbers freed up were reused on other routes, one new number - 267 - was used, and the new State Route 177 was an entirely new state highway.

Note: this list may include some changes that were made within the year prior to the renumbering, since the main sources used are two maps dated August 1, 1926, and June 1, 1927.

New	Old	From	To
U.S. Route 20	State Route 23	Indiana	West of Toledo
U.S. Route 20	State Route 63	West of Toledo	Perrysburg
U.S. Route 20	State Route 102	Perrysburg	Southeast of Woodville
U.S. Route 20	State Route 2	Southeast of Woodville	Pennsylvania
U.S. Route 21	State Route 8	Marietta	Newcomerstown
U.S. Route 21	State Route 20	Newcomerstown	New Philadelphia
U.S. Route 21	State Route 13	Northwest of Strasburg (US 21 overlapped State Route 6 from New Philadelphia)	Cleveland
U.S. Route 22	State Route 49	Cambridge	Pennsylvania
U.S. Route 23	State Route 4	Portsmouth	Marion
U.S. Route 23	State Route 22	North of Marion (US 23 overlapped SR 4 from Marion)	Carey
U.S. Route 23	State Route 63	Carey	Perrysburg
U.S. Route 23	State Route 6	Perrysburg	Toledo
U.S. Route 23	State Route 256	Toledo	Michigan
U.S. Route 24	State Route 31	Indiana	Napoleon
U.S. Route 24	State Route 110	Napoleon	Grand Rapids
U.S. Route 24	State Route 31	Grand Rapids	Toledo
U.S. Route 24	State Route 177	Toledo	Michigan
U.S. Route 25	State Route 124	Sharonville (US 25 overlapped US 42 from Cincinnati)	Franklin
U.S. Route 25	State Route 6	Franklin	Perrysburg (US 25 overlapped US 20 to Maumee and US 24 to Toledo)
U.S. Route 25	State Route 6	Toledo	Michigan
U.S. Route 27	State Route 129	Cincinnati	Ross
U.S. Route 27	State Route 223	Northeast of Ross (US 27 overlapped SR 128 from Ross)	McGonigle
U.S. Route 27	State Route 126	McGonigle	Indiana
U.S. Route 30	State Route 5	Indiana	Delphos
U.S. Route 30	State Route 10	Delphos	Jefferson (US 30 overlapped SR 5 to Wooster)
U.S. Route 30	State Route 5	Wooster	Northwest of Cannons Mills (US 30 overlapped SR 7 to East Liverpool)
U.S. Route 40	State Route 1	Indiana	Bridgeport
U.S. Route 42	State Route 28	Cincinnati	London
U.S. Route 42	State Route 160	London	Delaware
U.S. Route 42	State Route 55	Delaware	Medina
U.S. Route 42	State Route 3	Medina	Cleveland
U.S. Route 50	State Route 7	Indiana	Cincinnati
U.S. Route 50	State Route 27	Cincinnati	Milford
U.S. Route 50	State Route 26	Milford	Athens
U.S. Route 50	State Route 144	Athens	Coolville (US 50 overlapped SR 7 to Belpre)
U.S. Route 52	State Route 130	Indiana	Cincinnati
U.S. Route 52	State Route 7	Cincinnati	Chesapeake
U.S. Route 127	State Route 112	Toledo	Michigan
U.S. Route 322	State Route 15	Cleveland	Pennsylvania
U.S. Route 422	State Route 16	Cleveland	Warren
U.S. Route 422	State Route 169	Warren	Northwest of Girard
U.S. Route 422	State Route 16	Northwest of Girard	Pennsylvania
State Route 2	State Route 2	Indiana	Toledo
State Route 2	State Route 23	Toledo	West of Port Clinton (SR 2 overlapped SR 163 to west of Marblehead and crossed on a ferry to Sandusky)
State Route 2	State Route 12	Sandusky	Cleveland
State Route 3	State Route 3	Cincinnati	Northwest of Lakeville
State Route 3	State Route 250	Northwest of Lakeville	Southwest of Wooster
State Route 3	State Route 3	Southwest of Wooster	Medina
State Route 3	State Route 55	Medina	Hinckley
State Route 3	State Route 94	Hinckley	Cleveland
State Route 4	State Route 6	Cincinnati	Middletown
State Route 4	State Route 52	Middletown	Southwest of Milford Center
State Route 4	State Route 55	Southwest of Milford Center	Marysville
State Route 4	State Route 38	Marysville	Marion
State Route 4	State Route 4	Marion	Sandusky
State Route 5	State Route 5	Delphos	Wooster
State Route 6	State Route 180	Fitchville (SR 6 overlapped SR 13 from Norwalk)	Savannah (SR 6 overlapped SR 60 to Ashland)
State Route 6	State Route 95	Wooster (SR 6 overlapped SR 5 from Ashland)	Northwest of Strasburg
State Route 6	State Route 13	Northwest of Strasburg	Bridgeport
State Route 7	State Route 7	Chesapeake	Conneaut
State Route 8	State Route 48	Fly	Uhrichsville
State Route 8	State Route 8	Uhrichsville	Cleveland
State Route 9	State Route 9	Cincinnati	West of Ney (overlapped SR 22 to Ney until 1927)
State Route 9	State Route 249	West of Ney	South of Bryan
State Route 9	State Route 9	South of Bryan	Michigan
State Route 10	State Route 40	Washington Court House	Zanesville
State Route 12	State Route 12	Findlay	Sandusky
State Route 13	State Route 30	Chauncey	Sandusky
State Route 15	State Route 9	South of Bryan	Ney
State Route 15	State Route 22	Ney	Carey
State Route 16	State Route 20	Columbus	Newcomerstown
State Route 16	State Route 8	Newcomerstown	Uhrichsville
State Route 26	State Route 26	Athens	Griffith
State Route 28	State Route 27	Milford	West of Chillicothe (SR 27 overlapped SR 26 to Chillicothe)
State Route 31	State Route 21	Pomeroy	Findlay
State Route 32	State Route 32	Indiana	Marysville
State Route 32	State Route 55	Marysville	Delaware
State Route 38	State Route 38	Ripley	Marysville
State Route 39	State Route 39	Shelby	Dover
State Route 39	State Route 20	Dover (SR 39 overlapped US 21 from New Philadelphia)	East Liverpool
State Route 39	State Route 5	East Liverpool	Pennsylvania
State Route 48	State Route 50	Lebanon	Abe
State Route 49	State Route 51	Northwest of Van Wert	Michigan
State Route 51	State Route 51	Dayton	Willshire
State Route 55	State Route 55	Ludlow Falls	Southwest of Milford Center
State Route 63	State Route 125	West of Monroe	Lebanon
State Route 73	State Route 6	Middletown	Franklin
State Route 73	State Route 73	Franklin	West of Portsmouth
State Route 94	State Route 94	McDowell	Hinckley
State Route 94	State Route 55	Hinckley	Cleveland
State Route 95	State Route 42	Marion	North of Cambridge
State Route 102	State Route 2	Toledo	Southeast of Woodville
State Route 104	State Route 104	North of Chillicothe (SR 104 overlapped SR 11 from Chillicothe until 1927)	Columbus
State Route 110	State Route 31	Napoleon	Grand Rapids
State Route 110	State Route 110	Grand Rapids	Perrysburg
State Route 112	State Route 104	Northwest of Portsmouth	Waverly (SR 104 overlapped US 23 to Chillicothe)
State Route 124	State Route 24	Hillsboro	East of Rolandus
State Route 125	State Route 25	Cincinnati	Friendship
State Route 126	State Route 129	Indiana	Ross
State Route 126	State Route 26	Dunlap (SR 126 overlapped US 27 from Ross)	Milford
State Route 129	State Route 127	Indiana	Hamilton
State Route 130	State Route 126	Hamilton	McGonigle
State Route 142	State Route 28	London	West Jefferson
State Route 144	State Route 144	Coolville	Little Hocking
State Route 159	State Route 27	Hopetown (SR 27 overlapped SR 4 from Chillicothe)	Kinnikinnick
State Route 159	State Route 159	Kinnikinnick	Amanda
State Route 160	State Route 142	Gallipolis	Hamden
State Route 169	State Route 16	Warren	Northwest of Girard
State Route 170	State Route 263	East Liverpool	East Palestine (SR 170 overlapped SR 14 to Unity)
State Route 170	State Route 170	Unity	Petersburg
State Route 177	N/A	North of Tuscarawas	New Philadelphia
State Route 180	State Route 27	Kinnikinnick	Enterprise (SR 27 overlapped SR 21 to Logan)
State Route 204	State Route 204	West of Millersport	Sego
State Route 223	State Route 102	Holland	Northwest of Maumee (SR 102 overlapped US 20 to Perrysburg)
State Route 249	State Route 22	Indiana	Ney
State Route 250	State Route 3	Lakeville (SR 3 overlapped SR 179 to northwest of Lakeville)	Southwest of Wooster
State Route 256	State Route 204	Reynoldsburg	Baltimore
State Route 263	State Route 63	Sylvania	West of Toledo
State Route 263	State Route 23	West of Toledo	Toledo
State Route 267	State Route 5	Northwest of Cannons Mills	East Liverpool

References

• Ohio Department of Transportation, Ohio Transportation Maps, particularly the 1926 and 1927 maps