| State Route 45 | ||||
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Route of SR 45 highlighted in red
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| Route information | ||||
| Maintained by ODOT | ||||
| Length: | 96.62 mi (155.49 km) | |||
| Existed: | 1924 – present | |||
| Major junctions | ||||
| South end: |
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| North end: |
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| Location | ||||
| Counties: | Columbiana, Mahoning, Trumbull, Ashtabula | |||
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State Route 45 (SR 45) is a north–south state highway in the northeastern portion of the U.S. state of Ohio. Its southern terminus is at the State Route 7/State Route 39 concurrency in Wellsville, and its northern terminus is at State Route 531 about 3 miles (4.8 km) west of Ashtabula.