U.S. Route 20 (US 20) is a United States Numbered Highway that runs from Newport, Oregon, to Boston, Massachusetts. Within the state of Ohio, the route runs from the Indiana border near Edon to the Pennsylvania border at Conneaut. The route passes through rural areas west of Toledo and passes through Public Square in Cleveland. It is one of nine other routes to enter Downtown Cleveland at Public Square, and it serves some of Cleveland's northeastern suburbs.

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Quick Facts Route information, Length ...

U.S. Route 20
US 20 highlighted in red
Route information
Maintained by ODOT
Length	260.54 mi[1] (419.30 km)
Existed	1926–present
Tourist routes	Lake Erie Circle Tour
Major junctions
West end	US 20 at the Ohio-Indiana border near Edon
Major intersections	US 127 in Fayette I-475 / US 23 in Toledo I-75 / US 23 in Perrysburg US 6 in Fremont US 250 in Norwalk I-80 near Elyria I-90 in Cleveland US 422 / SR 8 / SR 14 / SR 43 / SR 87 in Cleveland SR 11 in Edgewood
East end	US 20 at the Ohio-Pennsylvania border at Conneaut
Location
Country	United States
State	Ohio
Counties	Williams, Fulton, Lucas, Wood, Sandusky, Huron, Lorain, Cuyahoga, Lake, Ashtabula
Highway system
United States Numbered Highway System List Special Divided Ohio State Highway System Interstate US State Scenic
← SR 19 → SR 20

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Prior to the establishment of the U.S. Numbered Highway System in 1926, the general routing of US 20 was occupied by State Route 23 (SR 23) from the Indiana state line to Toledo, SR 102 from Toledo to Woodville, and SR 2 from Woodville east to the Ohio–Pennsylvania border.^[2] The route has existed closely to its 1926 routing, except for three bypasses: a rerouting of US 20 near Elyria in 1988, one built around the north side of Fremont between 1957 and 1958,^[3][4] and a second built around the south side of Norwalk by 1967.^[5] By 1932, US 20 between Pioneer and Maumee had become US 20N and a US 20S designation had been created to the south between those points;^[6] by 1935, US 20N had reverted to US 20 and US 20S had become US 20A.^[7]

US 20 enters the state in Northwest Township, Williams County. The route parallels the Ohio Turnpike (Interstate 80 [I-80]/I-90) through rural farmland in the northwest corner of the state. Within the city of Toledo, the route turns north–south along Reynolds Road, which becomes Conant Street as the route enters Maumee. After crossing the Maumee River into Perrysburg, US 20 continues through downtown Perrysburg, then angles southeasterly, becoming concurrent with US 23 until Woodville. US 20 continues southeasterly toward the bypass of Fremont, most of which is concurrent with US 6.

From Fremont eastward, the route becomes a divided highway, except when passing through the communities of Clyde, Bellevue, and Monroeville. The route bypasses Norwalk to the south as an expressway, with much of the old routing of US 20 maintained as part of SR 61. Near Oberlin, US 20 once again becomes an expressway, until the route continues northward on a divided bypass on the east side of Elyria while the freeway continues easterly as SR 10. US 20 turns east again on the east side of Elyria, following Cleveland Street and Center Ridge Road through western suburban Cleveland.

In Lakewood, the route becomes concurrent with US 6 and SR 2, with a portion of the route following the Cleveland Memorial Shoreway. US 20 departs from the Shoreway then crosses the Detroit–Superior Bridge over the Cuyahoga River into Downtown Cleveland. From there, the route passes through Public Square easterly, paralleling US 322 one block to the south until nearing Case Western Reserve University. It travels northeasterly through the east side of Cleveland as Euclid Avenue, then through the suburbs of Euclid, Wickliffe, Willoughby, Mentor, Ohio, and Painesville, then continues easterly, roughly paralleling the Lake Erie shoreline through Geneva, Ashtabula, and Conneaut and into Pennsylvania.

• Harter, Kevin (June 18, 1995). "The Road Less Traveled". The Plain Dealer Sunday magazine. pp. 8–13.