# Interstate 75

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**Interstate 75** (**I-75**) is a major north–south [Interstate Highway](/source/Interstate_Highway_System) in the [Great Lakes](/source/Great_Lakes_region) and [Southeastern](/source/Southeastern_United_States) regions of the [United States](/source/United_States). As with most Interstates that end in 5, it is a major cross-country, north–south route at a length of 1,786.47 miles (2,875.04 km), traveling from [State Road 826](/source/Florida_State_Road_826) (SR 826, Palmetto Expressway) and [SR 924](/source/Florida_State_Road_924) (Gratigny Parkway) on the [Hialeah](/source/Hialeah,_Florida)–[Miami Lakes](/source/Miami_Lakes,_Florida) border (a few miles northwest of [Miami](/source/Miami), Florida), to [Sault Ste. Marie, Michigan](/source/Sault_Ste._Marie,_Michigan), at the [Canada–United States border](/source/Canada%E2%80%93United_States_border). It is the second-longest north–south Interstate Highway (after [I-95](/source/Interstate_95)) and the seventh-longest Interstate Highway overall.[2]

I-75 passes through six different states. The highway runs the length of the Florida peninsula from the Miami area and up the [Gulf Coast](/source/Gulf_Coast_of_the_United_States) through [Tampa](/source/Tampa,_Florida). Farther north in Georgia, I-75 continues on through [Macon](/source/Macon,_Georgia) and [Atlanta](/source/Atlanta) before running through [Chattanooga](/source/Chattanooga,_Tennessee) and [Knoxville](/source/Knoxville,_Tennessee) and the [Cumberland Mountains](/source/Cumberland_Mountains) in Tennessee. I-75 crosses Kentucky, passing through [Lexington](/source/Lexington,_Kentucky) before crossing the [Ohio River](/source/Ohio_River) into [Cincinnati](/source/Cincinnati), Ohio. In Ohio, the highway runs up the western side through [Dayton](/source/Dayton,_Ohio) and [Lima](/source/Lima,_Ohio) before crossing into Michigan north of [Toledo](/source/Toledo,_Ohio). I-75 runs northeasterly along the [Lake Erie](/source/Lake_Erie) shoreline and [Detroit River](/source/Detroit_River) into the city of [Detroit](/source/Detroit) before turning northwesterly to [Flint](/source/Flint,_Michigan) and northward to the [Mackinac Bridge](/source/Mackinac_Bridge) where the freeway crosses the strait between Lakes [Huron](/source/Lake_Huron) and [Michigan](/source/Lake_Michigan). Farther north, I-75 approaches the Canadian border at Sault Ste. Marie, downriver from [Lake Superior](/source/Lake_Superior), 1,786.5 miles (2,875.1 km) from its origins near the subtropical [Atlantic Ocean](/source/Atlantic_Ocean).

## Route description

|- |[FL](/source/Interstate_75_in_Florida) || 470.88 || 757.81 |- |[GA](/source/Interstate_75_in_Georgia) || 355.11 || 571.49 |- |[TN](/source/Interstate_75_in_Tennessee) || 161.86 || 260.49 |- |[KY](/source/Interstate_75_in_Kentucky) || 191.78 || 308.64 |- |[OH](/source/Interstate_75_in_Ohio) || 211.30 || 340.05 |- |[MI](/source/Interstate_75_in_Michigan) || 395.54 || 636.56 |- |**Total** || 1786.47 || 2875.04 |}

### Florida

Main article: [Interstate 75 in Florida](/source/Interstate_75_in_Florida)

I-75 starts at an interchange with [SR 924](/source/Florida_State_Road_924) and [SR 826](/source/Florida_State_Road_826) on the [Hialeah](/source/Hialeah,_Florida)–[Miami Lakes](/source/Miami_Lakes,_Florida) border in suburban [Miami](/source/Miami). After an intersection with the [Homestead Extension of Florida's Turnpike](/source/Homestead_Extension_of_Florida's_Turnpike) and an interchange with [I-595](/source/Interstate_595_(Florida)) and the [Sawgrass Expressway](/source/Sawgrass_Expressway) (SR 869), the Interstate leaves the [Miami metropolitan area](/source/Miami_metropolitan_area) and turns westward to travel through the [Everglades](/source/Everglades) along the tolled [Alligator Alley](/source/Alligator_Alley), which brings the highway to the Gulf Coast and [Naples](/source/Naples,_Florida), where it again heads north. Passing through [Bonita Springs](/source/Bonita_Springs,_Florida), [Fort Myers](/source/Fort_Myers,_Florida), and [Sarasota](/source/Sarasota,_Florida), I-75 is six lanes all the way to Georgia. The freeway enters the [Tampa Bay area](/source/Tampa_Bay_area) before the interchange with [I-275](/source/Interstate_275_(Florida)) northbound, which handles [St. Petersburg](/source/St._Petersburg,_Florida)-bound traffic. Within the Tampa metro are three more major junctions: one with the [Lee Roy Selmon Expressway](/source/Lee_Roy_Selmon_Expressway) which carries traffic into [Downtown Tampa](/source/Downtown_Tampa), one with [I-4](/source/Interstate_4) (a [turbine interchange](/source/Turbine_interchange)) which carries traffic across the center of the state to the [East Coast](/source/East_Coast_of_the_United_States), and another as I-275 traffic defaults back onto northbound. The freeway proceeds to enter suburban portions of [Pasco](/source/Pasco_County,_Florida), [Hernando](/source/Hernando_County,_Florida), and [Sumter](/source/Sumter_County,_Florida) counties on its way to [Ocala](/source/Ocala,_Florida) and [Gainesville](/source/Gainesville,_Florida). At [Lake City, Florida](/source/Lake_City,_Florida), [I-10](/source/Interstate_10), intersects with I-75. Afterward, the northmost stretch of I-75 in Florida exits the Sunshine State into southern [Georgia](/source/Georgia_(U.S._state)).

### Georgia

Main article: [Interstate 75 in Georgia](/source/Interstate_75_in_Georgia)

I-75 enters [Georgia](/source/Georgia_(U.S._state)) near [Lake Park](/source/Lake_Park,_Georgia), and it continues northward through the towns of [Valdosta](/source/Valdosta,_Georgia), [Tifton](/source/Tifton,_Georgia), and [Cordele](/source/Cordele,_Georgia) until it reaches the [Macon](/source/Macon,_Georgia) area, where it intersects with [I-16](/source/Interstate_16) eastbound toward I-75's route. After Macon, it passes the small town of [Forsyth](/source/Forsyth,_Georgia). The freeway reaches no major junctions again until in the [Atlanta metropolitan area](/source/Atlanta_metropolitan_area). The first metropolitan freeway met is [I-675](/source/Interstate_675_(Georgia)), then followed by [I-285](/source/Interstate_285_(Georgia)), Atlanta's only beltway dubbed as the Perimeter Beltway. It crosses inside the I-285 beltway and heads north several miles toward [Downtown Atlanta](/source/Downtown_Atlanta). I-75 then [runs concurrently](/source/Concurrency_(road)) with [I-85](/source/Interstate_85) due north over the [Downtown Connector](/source/Downtown_Connector) through the central business district of Atlanta, where it intersects with [I-20](/source/Interstate_20). The areas where I-85 and I-75 run concurrently are some of the most traffic-prone Interstate Highways in the nation. After the two Interstates split, I-75 diverts from I-85 and heads toward the northwest suburbs of Atlanta, with the major cities being [Marietta](/source/Marietta,_Georgia) and [Kennesaw](/source/Kennesaw,_Georgia) that it bypasses. To the northwest of Marietta, the highway runs concurrently with [I-575](/source/Interstate_575). After the interchange with I-575, the highway leaves the Atlanta metro area and traverses the [Blue Ridge Mountains](/source/Blue_Ridge_Mountains) in the north Georgia region as it heads toward Chattanooga.

### Tennessee

Main article: [Interstate 75 in Tennessee](/source/Interstate_75_in_Tennessee)

The freeway enters [Tennessee](/source/Tennessee) directly in the [Chattanooga metropolitan area](/source/Chattanooga_metropolitan_area), where it intersects with [I-24](/source/Interstate_24). Exiting [Chattanooga](/source/Chattanooga,_Tennessee) to the northeast, I-75 passes through an area known for dense fog. Twelve people were killed and 42 were injured in a [1990 I-75 fog disaster](/source/1990_Interstate_75_fog_disaster) on that stretch of I-75 in heavy fog on December 11, 1990.[3] I-75 does not meet any other freeways until it overlaps [I-40](/source/Interstate_40) near [Farragut](/source/Farragut,_Tennessee) and heads eastbound. Together, they enter the outskirts of [Knoxville](/source/Knoxville,_Tennessee), where I-75 overlaps itself with a different road, this time [I-640](/source/Interstate_640), but only for a short time. When the two meet [I-275](/source/Interstate_275_(Tennessee)), I-75 encounters some of its highest points of elevation through the [Cumberland Mountains](/source/Cumberland_Mountains), cutting through the uppermost peaks and ridges.

### Kentucky

Main article: [Interstate 75 in Kentucky](/source/Interstate_75_in_Kentucky)

I-75 continues northbound through the hilly terrain of the Cumberland Plateau region of [Kentucky](/source/Kentucky), passing through [London](/source/London,_Kentucky) and [Richmond](/source/Richmond,_Kentucky) and eventually reaching [Lexington](/source/Lexington,_Kentucky), where it briefly runs concurrently with [I-64](/source/Interstate_64) before splitting off in the direction of [Georgetown](/source/Georgetown,_Kentucky). Afterward, the route heads in the direction of Ohio. Near [Walton](/source/Walton,_Kentucky), [I-71](/source/Interstate_71) runs concurrently with I-75 for the next 20 miles (32 km) or so and heads toward Cincinnati. The two concurrent Interstates then make an interchange with [I-275](/source/Interstate_275_(Ohio%E2%80%93Indiana%E2%80%93Kentucky)), the Cincinnati beltway. After passing through [Covington](/source/Covington,_Kentucky), the I-71/I-75 highway traverses the [Ohio River](/source/Ohio_River) via the lower level of the [Brent Spence Bridge](/source/Brent_Spence_Bridge) and continues into [Downtown Cincinnati](/source/Downtown_Cincinnati).

### Ohio

Main article: [Interstate 75 in Ohio](/source/Interstate_75_in_Ohio)

Immediately after entering [Cincinnati](/source/Cincinnati,_Ohio), I-75 diverges from I-71, remaining generally due north through the Cincinnati metro area while I-71 curves more to the east and northeast through downtown Cincinnati and its surrounding suburbs. [I-74](/source/Interstate_74), [Ohio State Route 562](/source/Ohio_State_Route_562), and [Ohio State Route 126](/source/Ohio_State_Route_126) all intersect the freeway as it makes its way northward. After another interchange with the I-275 beltway, the freeway continues within the metro area, passing through [Middletown](/source/Middletown,_Ohio) and heading toward [Dayton](/source/Dayton,_Ohio), where [I-675](/source/Interstate_675_(Ohio)), [I-70](/source/Interstate_70), and [U.S. Route 35](/source/U.S._Route_35_in_Ohio) have interchanges with I-75. The interchange of I-75 with I-70 is known as the Freedom Veterans Crossroads.[4] After exiting the city of Dayton, I-75 makes its way northbound through Ohio, passing through smaller cities of [Troy](/source/Troy,_Ohio), [Piqua](/source/Piqua,_Ohio), [Sidney](/source/Sidney,_Ohio), [Wapakoneta](/source/Wapakoneta,_Ohio), [Lima](/source/Lima,_Ohio), [Findlay](/source/Findlay,_Ohio) and [Bowling Green](/source/Bowling_Green,_Ohio) before finally reaching [Toledo](/source/Toledo,_Ohio) located on the western shore of Lake Erie and the border of [Michigan](/source/Michigan). I-75 meets the [I-475](/source/Interstate_475_(Ohio)) interchange in the southern suburbs of Toledo in [Perrysburg](/source/Perrysburg,_Ohio) and then [I-80](/source/Interstate_80), [I-90](/source/Interstate_90), and the [Ohio Turnpike](/source/Ohio_Turnpike). As the Interstate passes through downtown Toledo, I-475 meets with I-75 again just north of the downtown area of Toledo. It then continues through some industrial areas as it progresses north before approaching [I-280](/source/Interstate_280_(Ohio)), which is the last major junction in Ohio. I-75 then passes by the Lake Erie neighborhoods of Shoreland and Point Place, just before entering the US state of Michigan with the sign welcoming motorists to Michigan.

### Michigan

Main article: [Interstate 75 in Michigan](/source/Interstate_75_in_Michigan)

Upon entering [Michigan](/source/Michigan), I-75 follows the northwestern shore of [Lake Erie](/source/Lake_Erie), passing through the residential neighborhoods of Toledo and [Luna Pier](/source/Luna_Pier,_Michigan) until about [Monroe](/source/Monroe,_Michigan) in which it then heads northeast to enter [Detroit](/source/Detroit,_Michigan). The freeway has an interchange with [I-275](/source/Interstate_275_(Michigan)) in northern [Monroe County](/source/Monroe_County,_Michigan). On a further note, it does not meet with any major junctions until in [Downtown Detroit](/source/Downtown_Detroit). Once near downtown, I-75 meets several interchanges: an interchange that leads into [Canada](/source/Canada) via the [Ambassador Bridge](/source/Ambassador_Bridge) (international bridge border crossing) to [Windsor](/source/Windsor,_Ontario), Ontario; an interchange with [I-375](/source/Interstate_375_(Michigan)); [I-94](/source/Interstate_94); [I-96](/source/Interstate_96); [M-10](/source/M-10_(Michigan_highway)); [M-8](/source/M-8_(Michigan_highway)). [I-696](/source/Interstate_696) also intersects I-75 in the northern metro area. When the freeway reaches [Pontiac](/source/Pontiac,_Michigan), there is a junction with [M-59](/source/M-59_(Michigan_highway)) and in [Flint](/source/Flint,_Michigan) further northward. It meets [I-475](/source/Interstate_475_(Michigan)) and [I-69](/source/Interstate_69) and overlaps [U.S. Route 23](/source/U.S._Route_23) (US 23). The Interstate then heads north toward [Saginaw](/source/Saginaw,_Michigan) where [I-675](/source/Interstate_675_(Michigan)) acts as a [spur route](/source/Spur_route) into the city. Further north in [Bay City](/source/Bay_City,_Michigan), [US 10](/source/U.S._Route_10) provides access to [Midland](/source/Midland,_Michigan) as well as downtown Bay City. When it nears [Standish](/source/Standish,_Michigan), US 23 diverts from I-75 to Lake Huron, where it heads further north. The last major interchange in the state of Michigan before it crosses the international border into Canada is at 4 Mile Road just south of [Grayling](/source/Grayling,_Michigan) where [US 127](/source/U.S._Route_127) ends with traffic merging onto northbound I-75 and southbound taking drivers through the center of the state. At [Mackinaw City](/source/Mackinaw_City,_Michigan), I-75 has interchanges with [US 31](/source/U.S._Route_31) and US 23 before crossing the [Mackinac Bridge](/source/Mackinac_Bridge) to reach the [Upper Peninsula](/source/Upper_Peninsula) of Michigan. I-75 is the only Interstate located in the [Upper Peninsula of Michigan](/source/Upper_Peninsula_of_Michigan) and it continues until it crosses the [Canadian border](/source/Canada%E2%80%93United_States_border) via the [Sault Ste. Marie International Bridge](/source/Sault_Ste._Marie_International_Bridge).

## History

This limited access highway that was planned in the 1950s roughly follows the general route of many older at-grade highways, including [US 2](/source/U.S._Route_2), [US 27](/source/U.S._Route_27), [US 25](/source/U.S._Route_25), and [US 41](/source/U.S._Route_41), among others. Some of these older US Highways (several of which are still in existence) previously had replaced the eastern route of the old [Dixie Highway](/source/Dixie_Highway).[citation needed]

I-75 was planned to end in [Tampa](/source/Tampa,_Florida), Florida, in the original plan for 41,000 miles (66,000 km) of Interstate Highways. However, beginning in the 1960s, there was a huge growth in the population of [Southwest Florida](/source/Southwest_Florida) ([Sarasota](/source/Sarasota,_Florida), [Fort Myers](/source/Fort_Myers,_Florida), [Naples](/source/Naples,_Florida), [Cape Coral](/source/Cape_Coral,_Florida), etc.), hence the need for new highways, especially a north–south freeway, as well as one connecting Florida's Gulf Coast to [South Florida](/source/South_Florida).[5] At first, Florida state legislators proposed a toll in the new highway, and, by 1968, it was decided that the federal government would pay 90 percent toward the extension of I-75 to southwestern and southeastern Florida.[6] This included subsuming a toll highway from Naples to the [Fort Lauderdale](/source/Fort_Lauderdale,_Florida) area, the [Alligator Alley](/source/Alligator_Alley), and furthermore to connect this expressway with I-95 in [North Miami](/source/North_Miami)—though due to some [local opposition](/source/Freeway_revolt), I-75 presently ends a few miles short of I-95.

I-75 was completed in Kentucky in 1970.[citation needed] The last segment in Michigan opened to traffic on November 1, 1973.[7] The last section of I-75 in Tennessee was completed on December 20, 1974.[8] On December 21, 1977, I-75 was completed from Tampa to Sault Ste. Marie with its final segment opening between northern [Marietta](/source/Marietta,_Georgia) and [Cartersville](/source/Cartersville,_Georgia), Georgia. It was estimated to have cost $3.5 billion in 1977 dollars (equivalent to $ in ) to build the original section.[9] The final stretch of I-75 in South Florida was completed in 1986 in [Miami-Dade](/source/Miami-Dade_County,_Florida) and [Broward](/source/Broward_County,_Florida) counties, and the last stretch to receive the signs for I-75 was the reconstructed (rebuilt and widened) Alligator Alley on November 25, 1992.[10]

On September 7, 2024, the [Interstate 75 Kentucky Shooting](/source/Interstate_75_Kentucky_Shooting) occurred near [London, Kentucky](/source/London,_Kentucky) in which multiple shots were fired at cars passing by, injuring 5.

## Junction list

**Reference:**[11]

**Florida**- on the [Hialeah](/source/Hialeah,_Florida)–[Miami Lakes](/source/Miami_Lakes,_Florida) city line
- on the [Davie](/source/Davie,_Florida)–[Sunrise](/source/Sunrise,_Florida)-[Weston](/source/Weston,_Florida) tripoint
- in Weston
- on the [Solana](/source/Solana,_Florida)–[Cleveland](/source/Cleveland,_Florida) CDP line
- in [Ellenton](/source/Ellenton,_Florida)
- east-northeast of [Terra Ceia](/source/Terra_Ceia,_Florida)
- in [Palm River-Clair Mel](/source/Palm_River-Clair_Mel,_Florida)
- in [Mango](/source/Mango,_Florida)
- on the [Lutz](/source/Lutz,_Florida)–[Wesley Chapel](/source/Wesley_Chapel,_Florida) CDP line
- west-northwest of [Ridge Manor](/source/Ridge_Manor,_Florida)
- southeast of [Ocala](/source/Ocala,_Florida)
- in Ocala
- in [Alachua](/source/Alachua,_Florida)
- in [Ellisville](/source/Ellisville,_Florida)
- in [Lake City](/source/Lake_City,_Florida)
- west-northwest of [Five Points](/source/Five_Points,_Florida)
- north-northeast of [Suwannee Springs](/source/Suwannee_Springs,_Florida)
**Georgia**- in [Valdosta](/source/Valdosta,_Georgia)
- northwest of Valdosta. The highways travel concurrently to [Hahira](/source/Hahira,_Georgia).
- in [Tifton](/source/Tifton,_Georgia)
- in Tifton
- in [Cordele](/source/Cordele,_Georgia)
- in [Unadilla](/source/Unadilla,_Georgia)
- in [Perry](/source/Perry,_Georgia)
- in Perry
- southwest of [Macon](/source/Macon,_Georgia)
- in Macon
- in Macon
- in Macon
- northwest of Macon
- northwest of [Bolingbroke](/source/Bolingbroke,_Georgia)
- in [Stockbridge](/source/Stockbridge,_Georgia)
- west of [Morrow](/source/Morrow,_Georgia)
- in [Forest Park](/source/Forest_Park,_Georgia)
- on the [Atlanta](/source/Atlanta)–[Hapeville](/source/Hapeville,_Georgia) city line
- in Atlanta. The highways [travel concurrently through Atlanta](/source/Downtown_Connector).
- in Atlanta
- in Atlanta
- in Atlanta. End of the [concurrency with I-85](/source/Downtown_Connector).
- in Atlanta
- in Atlanta
- in [Cumberland](/source/Cumberland,_Georgia)
- north-northwest of [Marietta](/source/Marietta,_Georgia)
- in [Cartersville](/source/Cartersville,_Georgia)
- in [Resaca](/source/Resaca,_Georgia)
- in [Dalton](/source/Dalton,_Georgia)
- southeast of [Ringgold](/source/Ringgold,_Georgia)
**Tennessee**- in [East Ridge](/source/East_Ridge,_Tennessee)
- on the East Ridge–[Chattanooga](/source/Chattanooga,_Tennessee) city line
- in Chattanooga. The highways travel concurrently to north of [[Collegedale, Tennessee|

Collegedale]].

- in [Cleveland](/source/Cleveland,_Tennessee)
- in [Lenoir City](/source/Lenoir_City,_Tennessee)
- west of [Farragut](/source/Farragut,_Tennessee). The highways travel concurrently to [Knoxville](/source/Knoxville,_Tennessee).
- in Knoxville
- in Knoxville
- in Knoxville. I-75/I-640 travels concurrently through Knoxville.
- in Knoxville. The highways travel concurrently through Knoxville.
- in Knoxville
- in [Rocky Top](/source/Rocky_Top,_Tennessee)
- in Rocky Top. The highways travel concurrently to [Caryville](/source/Caryville,_Tennessee).
- in [Jellico](/source/Jellico,_Tennessee)
**Kentucky**- in [Goldbug](/source/Goldbug,_Kentucky)
- in [Corbin](/source/Corbin,_Kentucky)
- east-southeast of [Mount Vernon](/source/Mount_Vernon,_Kentucky)
- in Mount Vernon
- in [Richmond](/source/Richmond,_Kentucky)
- south-southeast of [Lexington](/source/Lexington,_Kentucky). The highways travel concurrently to Lexington.
- in Lexington
- in Lexington. The highways travel concurrently through Lexington.
- in Lexington
- in [Georgetown](/source/Georgetown,_Kentucky)
- in Georgetown
- in [Walton](/source/Walton,_Kentucky). The highways travel concurrently to [Cincinnati, Ohio](/source/Cincinnati).
- in [Florence](/source/Florence,_Kentucky)
- in [Erlanger](/source/Erlanger,_Kentucky)
- in [Fort Mitchell](/source/Fort_Mitchell,_Kentucky)
- in [Covington](/source/Covington,_Kentucky)
**Ohio**- in Cincinnati
- in Cincinnati
- in Cincinnati. I-75/US 27/US 52 travel concurrently through Cincinnati.
- in Cincinnati
- in [Sharonville](/source/Sharonville,_Ohio)
- southeast of [Miamisburg](/source/Miamisburg,_Ohio)
- in [Dayton](/source/Dayton,_Ohio)
- in [Vandalia](/source/Vandalia,_Ohio)
- in Vandalia
- in [Piqua](/source/Piqua,_Ohio)
- in [Wapakoneta](/source/Wapakoneta,_Ohio)
- in [Findlay](/source/Findlay,_Ohio)
- in Findlay
- in [Bowling Green](/source/Bowling_Green,_Ohio)
- in [Perrysburg](/source/Perrysburg,_Ohio). I-75/US 23 travels concurrently through Perrysburg.
- in Perrysburg
- in [Rossford](/source/Rossford,_Ohio)
- in [Toledo](/source/Toledo,_Ohio)
- in Toledo
- in Toledo
**Michigan**- north-northeast of [Monroe](/source/Monroe,_Michigan)
- in [Taylor](/source/Taylor,_Michigan)
- in [Detroit](/source/Detroit)
- in Detroit
- in Detroit
- on the [Ferndale](/source/Ferndale,_Michigan)–[Hazel Park](/source/Hazel_Park,_Michigan)–[Royal Oak](/source/Royal_Oak,_Michigan)–[Madison Heights](/source/Madison_Heights,_Michigan) city line
- west-northwest of [Clarkston](/source/Clarkston,_Michigan)
- west of [Grand Blanc](/source/Grand_Blanc,_Michigan)
- south-southwest of [Flint](/source/Flint,_Michigan). The highways travel concurrently to southwest of [Standish](/source/Standish,_Michigan).
- in Flint
- west of [Beecher](/source/Beecher,_Michigan)
- east of [Saginaw](/source/Saginaw,_Michigan)
- north-northwest of [Zilwaukee](/source/Zilwaukee,_Michigan)
- west of [Bay City](/source/Bay_City,_Michigan)
- south of [Grayling](/source/Grayling,_Michigan)
- north-northeast of [Carp Lake](/source/Carp_Lake,_Michigan)
- in [Mackinaw City](/source/Mackinaw_City,_Michigan)
- in [St. Ignace](/source/St._Ignace,_Michigan)
- [Sault Ste. Marie International Bridge](/source/Sault_Ste._Marie_International_Bridge) at the [Canada–United States border](/source/Canada%E2%80%93United_States_border) in [Sault Ste. Marie](/source/Sault_Ste._Marie,_Michigan)

## Auxiliary routes

- [Tampa](/source/Tampa,_Florida)–[St. Petersburg](/source/St._Petersburg,_Florida), Florida: [I-175](/source/Interstate_175) (not directly connected), [I-275](/source/Interstate_275_(Florida)), [I-375](/source/Interstate_375_(Florida)) (not directly connected)
- [Macon](/source/Macon,_Georgia), Georgia: [I-475](/source/Interstate_475_(Georgia))
- [Atlanta](/source/Atlanta,_Georgia), Georgia: [I-675](/source/Interstate_675_(Georgia))
- Suburban spur to [Canton](/source/Canton,_Georgia), Georgia: [I-575](/source/Interstate_575) in the Atlanta area
- [Knoxville](/source/Knoxville,_Tennessee), Tennessee: [I-275](/source/Interstate_275_(Tennessee))
- [Cincinnati](/source/Cincinnati,_Ohio), Ohio: [I-275](/source/Interstate_275_(Ohio%E2%80%93Indiana%E2%80%93Kentucky))
- [Dayton](/source/Dayton,_Ohio), Ohio: [I-675](/source/Interstate_675_(Ohio))
- [Toledo](/source/Toledo,_Ohio), Ohio: [I-475](/source/Interstate_475_(Ohio))
- [Detroit](/source/Detroit), Michigan: [I-275](/source/Interstate_275_(Michigan)), [I-375](/source/Interstate_375_(Michigan))
- [Flint](/source/Flint,_Michigan), Michigan: [I-475](/source/Interstate_475_(Michigan))
- [Saginaw](/source/Saginaw,_Michigan), Michigan: [I-675](/source/Interstate_675_(Michigan))

## References

1. Public Roads Administration (August 14, 1957). [*Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials*](https://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_August_14,_1957.jpg). Washington, DC: Public Roads Administration. [Archived](https://web.archive.org/web/20170719213034/https://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_August_14,_1957.jpg) July 19, 2017 at the Wayback Machine. Retrieved June 14, 2018. – via [Wikimedia Commons](/source/Wikimedia_Commons)

1. ["7 of the Longest U.S. Interstates That Are Worth the Road Trip"](https://www.popularmechanics.com/technology/infrastructure/g2827/7-of-the-longest-us-interstates/). *Popular Mechanics*. July 19, 2022. [Archived](https://web.archive.org/web/20221226011135/https://www.popularmechanics.com/technology/infrastructure/g2827/7-of-the-longest-us-interstates/) December 26, 2022 at the Wayback Machine.

1. Staff (October 28, 1992). ["Safety Recommendation in reply to H-92-92"](https://www.ntsb.gov/recs/letters/1992/H92_92.pdf). [National Transportation Safety Board](/source/National_Transportation_Safety_Board). [Archived](https://ghostarchive.org/archive/20221009/https://www.ntsb.gov/recs/letters/1992/H92_92.pdf) 2022-10-09 at the Wayback Machine. Retrieved December 28, 2008.

1. Keeter, Brian (October 25, 2004). ["Nation's Top Highway Official Dedicates Key Dayton, Ohio, Interstate Interchange to State's Military Personnel"](https://www.fhwa.dot.gov/pressroom/fhwa0418.cfm). Federal Highway Administration. [Archived](https://web.archive.org/web/20110624000517/http://www.fhwa.dot.gov/pressroom/fhwa0418.htm) June 24, 2011 at the Wayback Machine. Retrieved March 26, 2011.

1. "West Coast Turnpike Study Ordered By Kirk". *St. Petersburg Times*. April 20, 1967. p. 1B.

1. "I-75 Extension Should Kill Toll Road - Cramer". *Daytona Beach Morning Journal*. August 16, 1968. p. 16.

1. ["Around the State: West Branch"](https://www.newspapers.com/clip/21756812/around_the_state_west_branch/). *[Traverse City Record-Eagle](/source/Traverse_City_Record-Eagle)*. [United Press International](/source/United_Press_International). November 2, 1973. p. 3. [OCLC 30098364](https://www.worldcat.org/oclc/30098364). [Archived](https://web.archive.org/web/20180711065438/https://www.newspapers.com/clip/21756812/around_the_state_west_branch/) July 11, 2018 at the Wayback Machine. Retrieved July 10, 2018. – via Newspapers.com.

1. ["Dunn Opens 96 Interstate Miles"](https://www.newspapers.com/newspage/111605241/). *The Tennessean*. December 21, 1974. p. 32. [Archived](https://web.archive.org/web/20190614103543/https://www.newspapers.com/newspage/111605241/) June 14, 2019 at the Wayback Machine. Retrieved April 18, 2018. – via Newspapers.com.

1. Ayres, B. Drummond (December 22, 1977). ["I-75 Link Opens First Full Interstate Route"](https://www.nytimes.com/1977/12/22/archives/i75-link-opens-first-full-interstate-route.html). *[The New York Times](/source/The_New_York_Times)*. p. 14. [Archived](https://web.archive.org/web/20211204103657/https://www.nytimes.com/1977/12/22/archives/i75-link-opens-first-full-interstate-route.html) December 4, 2021 at the Wayback Machine. Retrieved December 4, 2021.

1. Staff. ["Previous Interstate Facts of the Day"](https://highways.dot.gov/highway-history/interstate-system/50th-anniversary). *Celebrating the Eisenhower Interstate Highway System*. Federal Highway Administration. [Archived](https://web.archive.org/web/20060426084506/http://www.fhwa.dot.gov/interstate/previousfacts.cfm) April 26, 2006 at the Wayback Machine. Retrieved May 11, 2010.

1. Rand McNally (2014). *The Road Atlas*. Walmart ed. Chicago: Rand McNally. pp. 26–29, 43, 50–51, 78, 80, 95. ISBN 978-0-528-00771-2.

- Rand McNally (2005). *The Road Atlas*. 2005 ed. Chicago: Rand McNally. ISBN 9780886408473.
- Transportation Statistics Office. ["GIS Data / Map Directory"](http://www.dot.state.fl.us/planning/statistics/gis/default.htm). [Florida Department of Transportation](/source/Florida_Department_of_Transportation). [Archived](https://web.archive.org/web/20070206112520/http://www.dot.state.fl.us/planning/statistics/gis/default.htm) February 6, 2007 at the Wayback Machine.
- Pavement Management Office (February 2, 2007). ["Pavement Management Reports"](http://www.dot.state.fl.us/PavementManagement/pcs/pcs_rpts.htm). Florida Department of Transportation. [Archived](https://web.archive.org/web/20070203002808/http://www.dot.state.fl.us/pavementmanagement/pcs/pcs_rpts.htm) February 3, 2007 at the Wayback Machine.
- Office of Transportation Data (2003). [*Interstate Mileage Report (438 Report)*](https://web.archive.org/web/20060218010013/http://www.dot.state.ga.us/DOT/plan-prog/transportation_data/400reports/2003/dpp438_2003.pdf). [Georgia Department of Transportation](/source/Georgia_Department_of_Transportation). Archived from [the original](http://www.dot.state.ga.us/DOT/plan-prog/transportation_data/400reports/2003/dpp438_2003.pdf) on February 18, 2006.

## External links

- [Interstate 75](http://www.michiganhighways.org/listings/MichHwys70-79.html#I-075) at Michigan Highways
- [Interstate 75](http://www.cincinnati-transit.net/I-75.html) on Cincinnati-Transit.net

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Adapted from the Wikipedia article [Interstate 75](https://en.wikipedia.org/wiki/Interstate_75) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Interstate_75?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.