I-275 highlighted in red
|Auxiliary route of I‑75|
|Length||83.71 mi  (134.72 km)|
|Beltway around Cincinnati, Ohio|
|States||Kentucky, Indiana, Ohio|
OH: Hamilton, Clermont
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 area, and includes a part in a state (Indiana) not entered by the parent route. It had been the only auxiliary interstate that enters three states, but that changed in July 2018 when I-295 in Delaware and New Jersey was extended into Pennsylvania. 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 Bypass 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.
I-275 heads northeast towards Springdale, and I-275 runs concurrently with I-74 and US 52. When the concurrency ends, I-275 has an intersection with Ohio State Route 126 (SR 126, Ronald Reagan Cross County Highway). Then I-275 has interchanges with US 27 and US 127. I-275 turns east having an interchange with SR 4, SR 747, I-75, and US 42. I-275 turns southeast having an interchange with I-71 and US 22/ SR 3. I-275 passes over the Little Miami River, entering Clermont County, where it is officially named in honor of Matt Maupin, a local soldier killed during the Iraq War. I-275 turns due south toward Milford and connects with SR 28, SR 450, SR 32, and SR 125. I-275 turns due west towards Kentucky, passing through a short concurrency with US 52, before crossing over the Ohio River into Kentucky.
From Ohio I-275 heads southwest towards Highland Heights. I-275 has an interchange with I-471 near Highland Heights. I-275 turns due west towards Crestview Hills, passing through an interchange with KY 9, KY 16, and KY 17. In Crestview Hills I-275 has an interchange with US 25/ US 42/ US 127. I-275 turns northeast towards I-71/ I-75.
This section needs expansion with: how the highway was built and its precursors. You can help by adding to it. (August 2012)
On May 20, 2008, a tractor-trailer hauling a locomotive separated while traveling on the ramp from westbound I-74 to southbound I-275. After the trailer detached, it crashed into supports for the bridge on I-74 eastbound going over the ramps between I-275 and I-74 westbound. As a result, the Ohio Department of Transportation shut down eastbound I-74 for several weeks.  Both ramps between I-74 west and I-275 were closed as well, because of fears the bridge would collapse, but two crossovers were built so that traffic could use one lane of westbound I-74 to travel east around the damaged bridge. 
|State||County||Location||mi   ||km||Exit ||Destinations||Notes|
|84||I-71 / I-75 ‚Äď Louisville, Lexington, Cincinnati||I-71/75 exit 185|
|||3.969||6.387||4||KY 212 to KY 20 ‚Äď Cincinnati/Northern Kentucky International Airport||Signed as exits 4A (east) and 4B (west) westbound|
|Hebron||7.028||11.310||8||KY 237 (North Bend Road) ‚Äď Hebron||Signed as exits 8A (north) and 8B (south) westbound|
|Idlewild||11.427||18.390||11||KY 8 south ‚Äď Petersburg||Northern terminus of the western segment of KY 8; I-275 west becomes north inner; I-275 south to east outer|
|Ohio River||13.858||22.302||Carroll Lee Cropper Bridge; Kentucky‚ÄďIndiana state line|
|Indiana||Dearborn||Lawrenceburg Township||15.13||24.35||16||SR 1 north to US 50 ‚Äď Lawrenceburg, Greendale, Aurora||Southern terminus of SR 1; access to Hollywood Casino Lawrenceburg, Grand Victoria Casino and Belterra Casino|
|17.02||27.39||Indiana‚ÄďOhio state line|
|Ohio||Hamilton||Whitewater Township||20.99||33.78||21||Kilby Road|
|24.24||39.01||25||I-74 west / US 52 west ‚Äď Indianapolis||South end of I-74 / US 52 overlap; I-74 exit 5|
|27.02||43.48||7||SR 128 (Hamilton‚ÄďCleves Road) ‚Äď Hamilton, Cleves||I-275 north becomes east inner; I-275 west becomes south outer|
|Colerain Township||27.82||44.77||28||I-74 east / US 52 east ‚Äď Cincinnati||East end of I-74 / US 52 overlap; I-74 exit 9|
|31||Ronald Reagan Cross County Highway east / Blue Rock Road||Complete access formed by two partial interchanges: eastbound exit and westbound entrance at Ronald Reagan Cross County Highway; westbound exit and eastbound, westbound entrances at Blue Rock Road|
|33.04||53.17||33||US 27 / SR 126 (Colerain Avenue)||Access to Northgate Mall|
Forest Park tripoint
|36||US 127 (Hamilton Avenue) ‚Äď Forest Park, Fairfield|
|Forest Park||38.25||61.56||39||Winton Road ‚Äď Fairfield, Greenhills||Access to Forest Fair Village; westbound exit is split into separate north and south exits attached via collector/distributor lane|
|Springdale||40.40||65.02||41||SR 4 (Dixie Highway) ‚Äď Springdale, Fairfield, Hamilton|
|41.40||66.63||42||SR 747 (Princeton Pike) ‚Äď Springdale, Glendale||Signed as exits 42A (south) and 42B (north) westbound; access to Tri-County Mall|
|Sharonville||42.74||68.78||43||I-75 (Millcreek Expressway) ‚Äď Dayton, Cincinnati||Signed as exits 43A (south) and 43B (north); I-75 exit 16|
|43.47||69.96||44||Mosteller Road ‚Äď Sharonville|
|45.36||73.00||46||US 42 (Lebanon Road) ‚Äď Sharonville, West Chester, Mason|
|46.81||75.33||47||Reed Hartman Highway ‚Äď Sharonville, Blue Ash|
|Montgomery||48.24||77.63||49||I-71 ‚Äď Columbus, Cincinnati||I-71 north exit 17, south exits 17A-B; signed as exits 49A (south) & 49B (north) westbound|
|Sycamore Township‚Äď Montgomery line||49.22||79.21||50||US 22 / SR 3 (Montgomery Road) ‚Äď Montgomery, Morrow|
|Symmes Township||51.86||83.46||52||Loveland‚ÄďMadeira Road ‚Äď Loveland, Indian Hill, Madeira|
|Clermont||Miami Township||54.30||87.39||54||Wards Corner Road||I-275 east becomes south inner; I-275 north becomes west outer|
|57.31||92.23||57||SR 28 ‚Äď Milford, Blanchester|
|Union Township||59.20||95.27||59||SR 450 (Milford Parkway) to US 50 ‚Äď Milford, Hillsboro||Signed as exits 59A (west) and 59B (east); southbound exit uses collector/distributor lane|
|63.42||102.06||63||SR 32 ‚Äď Newtown, Batavia||Access to Eastgate Mall|
|65.91||106.07||65||SR 125 (Ohio Pike) ‚Äď Amelia||I-275 south becomes west inner; I-275 east becomes north outer|
|Hamilton||Anderson Township||68.83||110.77||69||Five Mile Road|
|70.95||114.18||71||US 52 east (Kellogg Avenue) ‚Äď New Richmond||East end of US 52 overlap|
|Cincinnati||72.64||116.90||72||US 52 west (Kellogg Avenue) ‚Äď Cincinnati||West end of US 52 overlap; access to River Downs|
|Ohio River||73.061||117.580||Combs‚ÄďHehl Bridge; Ohio‚ÄďKentucky state line|
|Kentucky||Campbell||Highland Heights||74.857||120.471||74||I-471 north / KY 471 south to US 27 ‚Äď Cincinnati, Alexandria, Highland Heights||Southern terminus of I-471, exits 1A-B; northern terminus of KY-471; signed as exits 74A (south) and 74B (north)|
|Highland Heights‚Äď Wilder line||75.454||121.431||76||Three Mile Road ‚Äď Wilder, Northern Kentucky University||Access to Northern Kentucky University; eastbound exit and westbound entrance|
|Wilder||77.097||124.076||77||KY 9 (AA Hwy.) ‚Äď Wilder, Maysville, Alexandria|
|Kenton||Taylor Mill||78.779||126.783||79||KY 16 (Taylor Mill Road) ‚Äď Covington, Taylor Mill|
|Fort Wright||79.970||128.699||80||KY 17 (Madison Pike) ‚Äď Covington, Independence|
|Crestview Hills||82.030||132.014||82||KY 1303 (Turkeyfoot Road) ‚Äď Lakeside Park, Crestview Hills,||Access to Thomas More College; leads to Edgewood|
|82.503||132.776||83||US 25 / US 42 / US 127 (Dixie Highway) ‚Äď Erlanger, Florence|
|84||I-71 / I-75 ‚Äď Louisville, Lexington, Cincinnati|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Adderly, Kevin (January 27, 2016). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2015". Route Log and Finder List. Federal Highway Administration. Retrieved May 31, 2016.
- Smith, Steve & Woods, Jamie (2007). "Around Town: How to Decode Cincinnati's Many Motorways". Cincinnati USA City Guide. p. 79. ISSN 0746-8210. Retrieved May 6, 2013.
- "DaftLogic Google Maps Area Calculator Tool".[ permanent dead link][ full citation needed]
- Welzel, Karin A. (c. 1984). "Honorary name article". The Columbus Dispatch. Retrieved April 12, 2009.[ full citation needed]
- Wartman, Scott (September 29, 2011). "N.Ky. Gets Ronald Reagan Highway". The Kentucky Enquirer. Cincinnati. Archived from the original on October 2, 2011. Retrieved October 3, 2011.
- "60‚Äď90 Days to Fix Whitewater Township Bridge". Cincinnati, OH: WKRC-TV. May 21, 2008. Archived from the original on May 30, 2008. Retrieved May 23, 2008.
- Relyea, Neil (May 22, 2008). "Work Crews Open One Lane from W I-74 To S I-275". Cincinnati, OH: WCPO-TV. Retrieved May 23, 2008.[ dead link]
- Kentucky Transportation Cabinet (2007). "Official DMI Route Log". Frankfort: Kentucky Transportation Cabinet. Retrieved September 3, 2011.
- Indiana Department of Transportation (2004). "Reference Post Book" (PDF). Indianapolis: Indiana Department of Transportation. I-275. Archived from the original (PDF) on June 15, 2011. Retrieved September 3, 2011.
- Ohio Department of Transportation Division of Planning (January 1, 2009). "Straight Line Diagrams". Columbus: Ohio Department of Transportation. Retrieved September 3, 2011.
- Ohio Department of Transportation (2007). "Interstate 275" (PDF). Ohio Interstate Exit Guide. Ohio Department of Transportation. Archived from the original (PDF) on December 29, 2010. Retrieved January 18, 2011.
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