|Maintained by ODOT|
|Length||211.55 mi (340.46 km)|
|South end||I-71 / I-75 at Kentucky state line|
|North end||I-75 at Michigan state line|
|Counties||Hamilton, Butler, Warren, Montgomery, Miami, Shelby, Auglaize, Allen, Hancock, Wood, Lucas|
Interstate 75 (I-75) runs from Cincinnati to Toledo by way of Dayton in the US state of Ohio. The highway enters the state running concurrently with I-71 from Kentucky on the Brent Spence Bridge over the Ohio River and into the Bluegrass region. I-75 continues along the Mill Creek Expressway northward to the Butler County line just north of I-275. From there, the freeway runs into the Miami Valley and then passes through the Great Black Swamp before crossing into Michigan.
The highway enters the state via the Brent Spence Bridge into Downtown Cincinnati. I-71 immediately splits off to the east from this point, taking a more easterly route through downtown, while I-75 continues north along the west side of downtown. The Mill Creek Expressway is a heavily trafficked portion of I-75 in Ohio, from the Ohio River at the Kentucky state line to Butler County in Cincinnati's northern suburbs that follows the path of its namesake, Mill Creek, and the former path of the Miami and Erie Canal, and passes through the city's industrial core.
The highway continues north, intersecting I-74 and turning to the northeast. At one point, while passing through the suburb of Arlington Heights, the carriageways split apart and create a wide enough space for the community to be completely enclosed by the Interstate; they rejoin at the other end of the community. The highway then intersects the Cincinnati beltway, I-275, and continues northeasterly through the West Chester Township, Monroe, Middletown, and Franklin en route to the Dayton metropolitan area.
Once arriving in the Dayton area, I-75 first junctions with I-675, an eastern bypass of Dayton, in Miamisburg. The highway then continues north into Downtown Dayton, skirting it to the west and junctioning with I-70 near the Dayton International Airport.
The highway then continues north through the western side of the state toward Toledo, passing through cities such as Troy, Piqua, Lima, Findlay, and Bowling Green. Once the highway arrives in Toledo, it first intersects with I-475 in Perrysburg, followed by I-80/I-90 (Ohio Turnpike) in Rossford before skirting Downtown Toledo to the west. After the interchange, I-75 continues north into Downtown Toledo. Just north of downtown, I-475 rejoins I-75. After continuing northeasterly, I-75 intersects I-280, which connects the Ohio Turnpike. Following this, I-75 enters Michigan and follows the shore of Lake Erie.
I-75 in Ohio was built through the 1960s, supplanting U.S. Route 25 (US 25), though much of the freeway was built for US 25. By the time I-75 was finished, US 25 ran concurrently with I-75 for all but the northernmost section. By 1974, the US 25 designation was deemed unnecessary and removed from Ohio and Michigan. The northernmost section of US 25 in Ohio became State Route 25 (SR 25).
In 2005, the Ohio Department of Transportation (ODOT) considered reconfiguring I-75's existing interchange in Findlay with US 224 and SR 15 west as a diverging diamond interchange (DDI) to improve traffic flow. Had it been constructed, it would have been the first such interchange in the US. By 2006, ODOT had reconsidered, instead adding lanes to the existing overpass.
Traffic congestion in the Cincinnati–Dayton corridor has led to proposals for a regional I-75 bypass to divert through traffic.
The segment from West Chester to Middletown was widened in 2010. Construction on the highway continues from Middletown all the way to I-675.
In Dayton, ODOT recently completed total reconfiguration of I-75 with several projects occurring simultaneously. The intersection of I-75 and I-70 was reconfigured to handle an increased traffic load at the intersection. I-75 through Downtown Dayton at the intersections of SR 4, US 35, and between were widened and modernized.
ODOT between 2014 and 2016 completed a widening project between I-475 in Perrysburg and SR 15 in Findlay to add a third lane in each direction. The SR 15 interchange (which also features the north end of US 68) was subsequently rebuilt as well. Several miles north of the southerly I-475 junction, I-75 intersects with I-80/I-90 (Ohio Turnpike).
Work began in May 2019 to convert the existing interchange with Union Centre Boulevard in West Chester Township, Butler County, to a DDI. The $20-million project was completed in mid-2020.
The Mill Creek Expressway generally follows the old Miami and Erie Canal, which extended from Cincinnati to Toledo via Dayton, itself built in the Mill Creek valley near Cincinnati. The canal extended from the Ohio River along the present locations of Eggleston Avenue and Central Parkway to Mount Storm Park and continued north, remaining close to the Mill Creek Expressway to Butler County.
The first portion of the expressway was built by the Works Progress Administration (WPA) in 1941[a]—during World War II—to serve the Wright Aeronautical plant in Lockland. Known then as the Wright Highway, it was initially planned to run from Paddock Road (SR 4) in Carthage north to Cincinnati-Dayton Road (then US 25) near Maud but was only built—almost completely along the old canal—between Galbraith Road and Glendale-Milford Road (then SR 126). A short extension was built south to Towne Street in Elmwood Place in the late 1940s.
In 1960, plans were announced to add an eastern portion that would result in Arlington Heights being surrounded on both sides by the highway.
On January 19, 2015, an overpass north of Hopple Street collapsed onto the highway below at approximately 10:30 pm. The span that failed was the segment of the former northbound ramp to Hopple Street that passed over the southbound lanes of I-75. The overpass had been closed and was in the process of being removed after a replacement ramp was opened on December 26, 2014. The Interstate underneath was open at the time of the failure. One construction worker on the overpass was killed during the collapse by a falling steel beam. A truck driver was injured when their semi hit the fallen overpass immediately after the collapse. One other worker was in a backhoe on the bridge but was uninjured.
There are plans to convert the existing interchange with SR 725 in Miamisburg to a DDI. The project will not be built until 2023 and its projected cost is $4.1 million, entirely funded by the state.
In Cincinnati, approximately 17 miles (27 km) of the highway will be totally reconfigured by three separate ODOT projects happening simultaneously. The Brent Spence Bridge Corridor project will replace the Brent Spence Bridge and continue north to the Western Hills Viaduct. The Mill Creek Expressway project will modernize the Mill Creek Expressway segment of the highway, from the Western Hills Viaduct to the Ronald Reagan Cross County Highway interchange. The Thru the Valley project will continue from the Cross County Highway north to I-275. These projects will improve safety by eliminating all left-hand exit ramps and increasing vehicular capacity.
|County||Location||mi||km||Old exit||New exit||Destinations||Notes|
|Ohio River||0.00||0.00||I-75 south / I-71 – Lexington, Louisville||Continuation into Kentucky|
|Brent Spence Bridge; Kentucky–Ohio state line|
I-71 north / US 50 east (Fort Washington Way) to I-471 south / US 52 east / Second Street – Columbus, Downtown Cincinnati, Riverfront
|Northern end of I-71 overlap; was exit 1A before the Fort Washington Way reconstruction|
|0.50||0.80||2||1C||Fifth Street, Central Avenue (US 22 / US 27 / US 42 / US 52 / US 127 / SR 3) – Downtown Cincinnati||No southbound entrance; was exit 1E before the Fort Washington Way reconstruction|
|0.63||1.01||3||1D||US 50 west (River Road, Sixth Street Expressway, SR 264 west) / Linn Street||Northbound exit and southbound entrance; was exit 1G before the Fort Washington Way reconstruction|
|0.71||1.14||4||1E||Seventh Street||No northbound exit; was exit 1F before the Fort Washington Way reconstruction|
To US 50 west / Freeman Avenue
|Southbound exit and northbound entrance; was exit 1G before the Fort Washington Way reconstruction|
|1.44||2.32||6||1G||Ezzard Charles Drive||No northbound exit, but ramp can be accessed by traffic entering at exits 1B, 1C, and 1E; was exit 1H before the Fort Washington Way reconstruction; formerly signed as Lincoln Park Drive|
|1.72||2.77||7||2A||Western Avenue, Liberty Street||Southbound exit and northbound entrance|
|2.51||4.04||8||2B||Harrison Avenue (Western Hills Viaduct)||Signed as exit 2 northbound|
|3.50||5.63||9||3||US 27 south / US 52 east / US 127 / Hopple Street||Southern end of US 27/US 52 overlap|
|4.23||6.81||10||4||I-74 west / US 27 north / US 52 west – Indianapolis||I-74 exit 20; northern end of US 27/US 52 overlap; exit connected to Colerain Avenue prior to construction of I-74|
|6.46||10.40||11||6||Mitchell Avenue – St. Bernard|
SR 562 east to I-71 – Norwood
|8.57||13.79||14||8||Towne Street – Elmwood Place||Northbound exit and entrance; to be removed|
SR 4 (Paddock Road) to SR 561 (Seymour Avenue)
|10.31||16.59||16||10A||SR 126 (Ronald Reagan Cross County Highway)||Southbound exit to SR 126 and northbound entrance from westbound SR 126 via exit 10|
|Arlington Heights||10.89||17.53||17||10B||Galbraith Road||Signed as exit 10 southbound|
|Lockland||11.84||19.05||18||12||Lockland, Reading||No northbound entrance; southbound right-in/right-out to Cooper Avenue and northbound exit to Davis Street|
|Evendale||12.92||20.79||19||13||Shepherd Lane, Neumann Way – Lincoln Heights||Southbound exit to Neumann Way via Exit 14; Neumann Way serves GE Aviation|
|14.26||22.95||20||14||Glendale-Milford Road – Evendale, Woodlawn|
|Sharonville||15.39||24.77||21||15||Sharon Road – Glendale|
I-275 to I-71 / I-74 – Columbus, Indianapolis
|Signed as exits 16A (east) and 16B (west) southbound; I-275 exit 43|
|Butler||West Chester Township||19.24||30.96||19||Union Centre Boulevard – Fairfield||diverging diamond interchange (DDI)|
|21.23||34.17||23||21||Cincinnati–Dayton Road||Former US 25|
|22.82||36.73||24||22||Tylersville Road – Mason|
|Liberty Township||24.19||38.93||24||SR 129 west / Liberty Way – Hamilton||SR 129 exit 25|
|Millikin Road||Future interchange|
|25||29||SR 63 – Monroe, Lebanon, Hamilton|
|Middletown||32.82||52.82||26||32||SR 122 – Middletown|
|Franklin||36.89||59.37||27||36||SR 123 – Franklin, Lebanon|
|Franklin–Springboro line||38.74||62.35||28||38||SR 73 – Springboro, Franklin|
|Montgomery||Miamisburg–Springboro line||41.56||66.88||41||Austin Boulevard – Springboro, Miamisburg, Washington Township||Opened in July 2010|
|29||43||I-675 north – Columbus||Directional T interchange.|
|Miamisburg||44.66||71.87||30||44||SR 725 – Centerville, Miamisburg|
|West Carrollton||47.31||76.14||31||47||East Dixie Drive – West Carrollton, Moraine||Former US 25; Converted to full access interchange in 2012|
|50.49||81.26||50B||SR 741 south (Springboro Pike)||Southbound exit and northbound entrance|
|Dayton||51.36||82.66||Bridge over the Great Miami River|
|51.70||83.20||33||51||Edwin C. Moses Boulevard, Nicholas Road|
|34||52A||Albany Street, Stewart Street||Former southbound exit and northbound entrance; closed in spring 2010 as part of I-75 Downtown Modernization|
|52.69||84.80||35||52||US 35 / SR 4 – Xenia, Eaton||Southern end of SR 4 concurrency; ramps to westbound US 35 and from eastbound US 35 include entrances and exits for Germantown Street; was exit 52B before Albany Street/Stewart Street exit was removed|
|53.18||85.58||Bridge over the Great Miami River|
|53.41||85.96||36||53||Second Street, Salem Avenue, First Street||Formerly signed as 53A (Third Street) and 53B (Salem Avenue, First Street) before interchange rebuild in 2016; exit 53 was also formerly exit 37; no southbound access to First Street|
|53.8||86.6||Bridge over the Great Miami River|
|54.22||87.26||38||54A||Grand Avenue, Riverside Drive, Main Street||Closed; southbound originally had two ramps to Riverside Drive which were later removed; access consolidated with newly built Main Street exit as part of I-75 Downtown Modernization|
|54.38||87.52||39||54A||SR 48 (Main Street)||Was exit 54B before Grand Avenue/Riverside Drive/Main Street exit was removed|
|54.63||87.92||Bridge over the Great Miami River|
|40||54B||SR 4 / Webster Street, Keowee Street – Springfield||Northern terminus of SR 4 concurrency; was exit 54C before Grand Avenue/Riverside Drive/Main Street exit was removed|
|41||55||Keowee Street, Leo Street||Closed; was signed northbound as exits 55A (Keowee Street south) and 55B (Keowee Street north, Leo Street); access to Keowee consolidated with Webster Street as part of I-75 Downtown Modernization|
|56.15||90.36||Bridge over the Great Miami River|
|Northridge||56.46||90.86||43||57A||Neva Drive||Former northbound exit and southbound entrance; closed with I-75 Downtown Modernization|
|56.74||91.31||44||57||Wagner Ford Road, Siebenthaler Avenue, Neff Road||Southbound exit only to Neff Road; indirect southbound exit to Wagner Ford Road via Keats Drive; indirect access to Siebenthaler Avenue in both directions via Wagner Ford Road and Dixie Drive; was exit 57B before Neva Drive exit was removed|
|Northridge–Harrison Township line||58.21||93.68||45||58||Needmore Road|
|Vandalia–Butler Township line||59.72||96.11||59||Wyse Road, Benchwood Road||Benchwood Road becomes Wyse Road immediately east of exit|
|60.71||97.70||46||60||Little York Road||Closed; northbound access was via Poe Avenue and southbound access via Miller Lane; replaced by exit 59|
|47||61||I-70 – Indianapolis, Columbus||Signed as exits 61A (east) and 61B (west) southbound; I-70 exit 33|
|Vandalia||63.18||101.68||48||63||US 40 – Donnelsville, Vandalia|
|Miami||Tipp City||67.96||109.37||50||68||SR 571 – Tipp City, West Milton|
|69.74||112.24||51||69||County Road 25A||Former US 25|
|52||73||SR 55 – Ludlow Falls, Troy|
|75.05||120.78||53||74||SR 41 – Troy, Covington|
|||78.50||126.33||54||78||County Road 25A||Former US 25|
|||78.62||126.53||Bridge over the Great Miami River|
|55||82||US 36 – Urbana, Piqua|
|56||83||County Road 25A – Piqua||Former US 25|
|Shelby||Sidney||90.58||145.77||57||90||Fair Road – Sidney|
|||91.96||148.00||58||92||SR 47 / I-75 BL – Sidney, Versailles|
|||93.83||151.00||59||93||SR 29 – Sidney, St. Marys|
|||94.73||152.45||60||94||County Road 25A Sidney||Former US 25|
|||99.77||160.56||61||99||SR 119 – Anna, Minster|
|||102.84||165.50||62||102||SR 274 – Jackson Center, New Bremen|
|||104.84||168.72||63||104||SR 219 – Botkins|
|Auglaize||||110.82||178.35||64||110||US 33 – St. Marys, Bellefontaine|
|Wapakoneta||111.26||179.06||65||111||Bellefontaine Street – Wapakoneta|
|||113.02||181.89||66||113||SR 67 – Uniopolis, Wapakoneta|
|Cridersville||118.16||190.16||67||118||National Road – Cridersville|
|Allen||Fort Shawnee||120.52||193.96||68||120||Breese Road – Fort Shawnee|
|Lima||122.63||197.35||69||122||SR 65 – Ottawa, Uniopolis, Lima|
|125.43||201.86||71||125||SR 117 / SR 309 – Lima, Kenton|
|||127.15||204.63||72||127||SR 81 – Ada, Lima|
|||134.72||216.81||74||134||Napoleon Road||Northbound exit and southbound entrance|
SR 696 to US 30 – Delphos, Upper Sandusky
|Bluffton||140.52||226.15||76||140||Bentley Road (SR 103) – Bluffton|
|Hancock||142.48||229.30||77||142||SR 103 – Arlington, Bluffton|
|||145.36||233.93||78||145||SR 235 – Ada, Mount Cory|
US 68 south / SR 15 east / I-75 BL north to US 23 – Carey, Columbus, Kenton
|Southern end of SR 15 overlap; northern terminus of US 68|
|157.90||254.12||80||157||SR 12 – Findlay, Columbus Grove|
|159.10||256.05||81||159||US 224 / SR 15 west – Findlay, Ottawa, Tiffin||Northern end of SR 15 overlap|
|||161.20||259.43||82||161||County Road 99|
|||162.73||261.89||83||Mortimer||Added c. 1968; removed 1974|
|||164.65||264.98||84||164||SR 613 – McComb, Fostoria|
|Wood||||167.15||269.00||85||167||SR 18 – North Baltimore, Fostoria|
|||167.81||270.06||86||168||Eagleville Road, Quarry Road||Eastbound access via Grant Road; westbound access via Insley Road|
|||171.86||276.58||87||171||SR 25 – Cygnet||Southern terminus of SR 25|
|||179.75||289.28||88||179||US 6 – Fremont, Napoleon||US 6 exit 66|
|Bowling Green||181.41||291.95||89||181||SR 64 / SR 105 – Pemberville, Bowling Green||To Bowling Green State University|
|Haskins||187.24||301.33||90||187||SR 582 – Luckey, Haskins|
|91||192||I-475 north / US 23 north – Maumee, Ann Arbor||Southern end of US 23 overlap; I-475 exit 1|
|Perrysburg||193.85||311.97||92||193||US 20 / US 23 south – Fremont, Perrysburg||Northern end of US 23 overlap|
I-80 Toll / I-90 Toll / Ohio Turnpike / SR 795 – Perrysburg, Cleveland, Chicago
|Connection to the Turnpike opened December 4, 1991;|
ramps to SR 795 opened August 22, 1994; signed as 195A (SR 795) and 195B (Ohio Turnpike), exits connected via collector/distributor lanes
|Northwood||199.02||320.29||94||198||Wales Road, Oregon Road – Northwood|
|Lucas||Toledo||199.84||321.61||95||199||SR 65 (Miami Street) – Rossford||Signed as exits 199A (north) and 199B (south) southbound|
|199.96||321.80||Michael V. DiSalle Bridge over the Maumee River (being replaced 2019–2023)|
|200.60||322.83||96||200||Kuhlman Drive, South Avenue||Access To Toledo Zoo (Broadway Street); Kuhlman Drive signed northbound only|
To SR 25 south / Collingwood Avenue – Maumee
|Northbound exit and southbound entrance from eastbound Collingwood Avenue; provides access from northbound I-75 to southbound SR 25 and from northbound SR 25 to southbound I-75|
|201.68||324.57||98||201B||SR 25 – Downtown Toledo, Maumee||Directional access (northbound to northbound and southbound to southbound) only; Downtown Toledo signed northbound only, Maumee signed southbound only|
|202.03||325.14||99||202A||Washington Street – Downtown Toledo||Southbound exit via Indiana Avenue and northbound entrance|
|202.49||325.88||100||202B||Collingwood Boulevard||Southbound exit and northbound entrance|
|203.33||327.23||100||203A||Bancroft Street||Northbound exit and southbound entrance via Lawrence Avenue|
US 24 (Detroit Avenue) to SR 51 (Monroe Street)
|Exit located at Detroit Avenue|
I-475 west to US 23 – Sylvania, Maumee, Ann Arbor
|I-475 exit 20|
|102||205A||Jeep Parkway||Interchange closed from March 2015 to July 2018 for reconstruction|
|205.46||330.66||103||205B||Berdan Avenue||Former northbound exit and southbound entrance; closed October 2016|
|205.55||330.80||Viaduct over the Ottawa River|
To US 24 / Phillips Avenue
|206.93||333.02||105||207||Stickney Avenue, Lagrange Street|
I-280 south / LECT to I-80 east / I-90 east / Ohio Turnpike east – Cleveland
|209.52||337.19||107||209||Ottawa River Road||Northbound exit and southbound entrance|
|209.84||337.70||Bridge over the Ottawa River|
|210.52||338.80||108||210||SR 184 (Alexis Road)|
|211.55||340.46||I-75 north / LECT – Detroit||Continuation into Michigan|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
I-75 in Ohio has three auxiliary routes. The southernmost is I-275, which serves as a full loop around Cincinnati, including segments that extend into Indiana and Kentucky. The northernmost is I-475, a bypass around Toledo area that also carries US 23 for 14 miles (23 km). The third auxiliary route is I-675 bypassing Dayton to the south and east and connecting to I-70 northeast of the city.
In addition to these auxiliary routes, there are three business routes of I-75. These run along former segments of US 25, I-75's predecessor highway. They connect to the downtowns of Troy and Piqua; Sidney; and Findlay.