Interstate 275 (Ohio–Indiana–Kentucky)
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| Cincinnati By-Pass | ||||||||||
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| Route information | ||||||||||
| Auxiliary route of I‑75 | ||||||||||
| Length: | 83.71 mi (134.72 km) | |||||||||
| Existed: | 1962 – present | |||||||||
| Major junctions | ||||||||||
| Beltway around Cincinnati, Ohio | ||||||||||
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| Location | ||||||||||
| States: | Kentucky, Indiana, Ohio | |||||||||
| Counties: |
KY: Kenton, Boone, Campbell IN: Dearborn OH: Hamilton, Clermont |
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| Highway system | ||||||||||
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Interstate 275 (I-275) is an 83.71-mile-long (134.72 km) loop in Ohio, Indiana, and Kentucky that forms a complete beltway around the Cincinnati, Ohio, area. It is the only auxiliary interstate that enters three states, including one state that the parent route does not enter (Indiana). It is the longest loop interstate highway in the United States, and it encloses an area of over 250,000 acres. For a short distance in northwest Hamilton County it overlaps with I-74 and U.S. Highway 52 (US 52).
I-275 is signed as the Cincinnati By-Pass and officially known as the Donald H. Rolf Circle Freeway in Ohio, after a state senator, but locals rarely use these names, instead simply referring to it as "two-seventy-five." In 2011, Kentucky named its segment the Ronald Reagan Highway, not to be confused with Ronald Reagan Cross County Highway across the river in Cincinnati. The section in Clermont County is also designated as the Staff Sergeant Matt Maupin Veterans Memorial Highway.
I-275 heads west toward Indiana passing by the Cincinnati/Northern Kentucky International Airport, with Kentucky Route 212 (KY 212) used as the service road to and from the airport. Then near Hebron, west of the airport, I-275 has an interchange with Kentucky Route 237 (KY 237), before passing over the Ohio River into Indiana.
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