Interstate 75 in Michigan facts for kids

Quick facts for kids Interstate 75
I-75 highlighted in red
Route information
Maintained by MDOT and MBA
Length	395.916 mi (637.165 km)
Existed	1959–present
History	Completed November 1, 1973
Tourist routes	Lake Erie Circle Tour Lake Michigan Circle Tour Lake Huron Circle Tour Lake Superior Circle Tour
Major junctions
South end	I-75 near Erie at the Ohio state line
	I-96 in Detroit I-94 in Detroit I-696 near Royal Oak US 23 near Grand Blanc I-69 in Flint US 10 near Bay City US 127 near Grayling US 31 near Mackinaw City US 2 in St. Ignace M-28 near Sault Ste. Marie
North end	International Bridge in Sault Ste. Marie
Location
Counties:	Monroe, Wayne, Oakland, Genesee, Saginaw, Bay, Arenac, Ogemaw, Roscommon, Crawford, Otsego, Cheboygan, Emmet, Mackinac, Chippewa
Highway system
Main route of the Interstate Highway System Main • Auxiliary • Business Michigan State Trunkline Highway System Interstate • US • State (CDH) ← M-74 BL I-75 →

Interstate 75 (I-75) is a very long highway that goes from Miami, Florida, all the way north to Sault Ste. Marie in Michigan. In Michigan, I-75 starts at the Ohio border and travels north. It passes through big cities like Detroit, Pontiac, and Bay City. Then, it crosses the amazing Mackinac Bridge and ends at the Canadian border in Sault Ste. Marie.

This freeway is about 396 miles (637 km) long in Michigan. It goes through many different types of land. You'll see farmlands in the south, thick forests up north, busy suburbs, and the heart of Detroit. I-75 also uses three huge bridges to cross major bodies of water. Several smaller highways connect to I-75, and some special "business routes" help drivers get into downtown areas.

I-75 has different names along its path. In the south, it was once called the Detroit–Toledo Expressway. In Detroit, it's known as the Fisher Freeway or the Walter P. Chrysler Freeway, named after important people in the car industry. Near the Mackinac Bridge, parts are called the G. Mennen Williams Freeway or the Prentiss M. Brown Freeway. These names honor politicians who helped build the bridge. The entire I-75 in Michigan is also called the Tuskegee Airmen Memorial Highway, honoring the brave Tuskegee Airmen. Officially, it's the American Legion Memorial Highway. Parts of I-75 are also part of the four Great Lakes Circle Tours.

Long ago, Native American trails followed the same general path as I-75. Later, these trails became early state highways. In the 1920s, some of these roads became part of the United States Numbered Highway System. In the 1950s, people thought about building a "Michigan Turnpike" as a toll road. But after a new law in 1956, a free Interstate Highway was planned instead. Construction started in 1957, and I-75 was finished in 1973. Since then, parts of the freeway have been improved, like the Zilwaukee Bridge and connections to the Ambassador Bridge in Detroit.

Driving Through Michigan

I-75 is often called "Michigan's Main Street." It's part of the National Highway System, which is a group of roads important for the country's economy and travel. This freeway is the busiest in Michigan. For example, in Detroit, over 194,000 vehicles used a part of it each day in 2010. In contrast, a quiet section in the Upper Peninsula only had about 3,200 vehicles daily.

I-75 is the only highway that goes through both of Michigan's main land areas: the Upper and Lower peninsulas. In the southern part of the state, I-75 has between six and ten lanes. Other parts have four to six lanes.

From Ohio to Detroit

I-75 northbound approaching exit 2 in Monroe County

When I-75 enters Michigan from Ohio, it's in Monroe County. Here, it follows the Lake Erie Circle Tour (LECT) near Lake Erie. The freeway runs close to the lake and passes by small towns like Luna Pier. It goes past Monroe and crosses the River Raisin. Further north, I-75 goes through farmlands. Near Newport, another highway, I-275, splits off. I-75 then enters Wayne County and starts running near the Detroit River.

As I-75 gets closer to Detroit, the area changes from farms to suburban neighborhoods. The LECT leaves I-75 here. The freeway passes through towns like Taylor and Lincoln Park. It crosses the Ecorse River and goes through industrial areas. Then, it crosses the River Rouge as it enters Detroit.

In Detroit, I-75 runs near the Ambassador Bridge, which connects to Canada. The freeway turns sharply here and meets other major highways like I-96, M-10, and M-5. I-75 also passes by famous sports stadiums like Little Caesars Arena, Comerica Park, and Ford Field. These are home to Detroit's professional hockey, baseball, and football teams.

Detroit to the Tri-Cities

Looking south along the Chrysler Freeway to the Detroit skyline

After leaving downtown Detroit, I-75 turns northwest. This part is called the Chrysler Freeway. It passes near Wayne State University and crosses I-94. The Chrysler Freeway goes between Hamtramck and Highland Park, which are cities surrounded by Detroit. I-75 continues through Detroit's northern neighborhoods. North of 8 Mile Road, the freeway enters Oakland County. In Hazel Park, there's a curve that has been known for many accidents.

Further north, I-75 meets I-696. The freeway then goes north into Troy and Auburn Hills. It zig-zags around Pontiac. Near the M-59 exit, I-75 passes the headquarters for Chrysler cars. It also runs near the former home of The Palace of Auburn Hills, a famous sports arena. The freeway continues through suburban areas, then changes back to a rural, wooded setting as it enters Genesee County.

Near Grand Blanc, the landscape becomes suburban again. I-475 splits off to go around the east side of Flint. Then, I-75 joins with US-23. Together, I-75/US-23 goes around the west side of Flint. They meet I-69 near the airport. The freeway continues north, passing the end of I-475. It goes by Clio and Birch Run, which has a big outlet mall. From there, the highway travels through farmlands in Saginaw County.

Central Michigan

Split between I-75 and US 23 west of Standish

I-75/US-23 enters the suburban area known as the Tri-Cities at Bridgeport. It goes north, passing east of downtown Saginaw. Another highway, I-675, splits off to go into downtown. I-75 then curves northwest to cross the Saginaw River on the Zilwaukee Bridge in Zilwaukee. North of the river, I-675 rejoins I-75. The freeway continues into Bay County, passing west of Bay City. Here, it meets the end of the US-10 freeway. I-75/US-23 then curves northwest again, going around Kawkawlin and continuing north through farmlands. West of Standish, US-23 splits off to follow the Lake Huron shoreline, and I-75 turns northwest to go inland.

West of Sterling, the scenery changes to forests. I-75 continues northwest through Arenac County and into Ogemaw County. It goes around the west side of West Branch. On the northwest side of that city, M-55 joins I-75, and they travel west together into Roscommon County. East of Prudenville, M-55 leaves the freeway. I-75 turns north, curving around Houghton and Higgins lakes. Then, it turns northwest again, bypassing Roscommon to the south. About 5 miles (8 km) north of the county line, I-75 meets the northern end of US-127.

Northern Michigan

Exit 254 south of Grayling

After the US-127 exit, I-75 turns north and passes east of Grayling. There are two exits for a business loop (BL I-75) that goes into Grayling. The southern exit is only for northbound I-75 traffic to enter the business loop, and for traffic leaving the business loop to go southbound on I-75. The northern exit for BL I-75 also connects to M-93 and provides access to Hartwick Pines State Park.

Entering Otsego County, I-75 continues north through northern Michigan forests. It passes east of Waters and Otsego Lake. North of exit 279, I-75 goes by the Gaylord Regional Airport and crosses the 45th Parallel. This is the halfway point between the Equator and the North Pole! The freeway then goes along the west side of Gaylord and continues through forests. North of Vanderbilt, I-75 enters Cheboygan County and is called the G. Mennen Williams Freeway.

I-75 continues north through Cheboygan County, passing Indian River and crossing the river of the same name. North of town, the freeway goes between Burt and Mullett lakes before meeting the southern end of M-27. This highway leads to Topinabee and Cheboygan. I-75 continues through tree farms and farms in rural Cheboygan County. Cheboygan can be reached by county highways C-64 and C-66. North of C-66, I-75 turns northwest. The freeway meets the northern end of US-31 and picks up the Lake Michigan Circle Tour (LMCT) before entering Emmet County near Mackinaw City. I-75 then runs next to the county line on the west side of the village, meeting the northern end of US-23. After that, the Lake Huron Circle Tour (LHCT) joins I-75. There's one more exit before I-75 starts its climb onto the Mackinac Bridge.

Mackinac Bridge

I-75 crossing the Mackinac Bridge

The Mackinac Bridge carries I-75 across the Straits of Mackinac. These straits separate Michigan's Upper and Lower peninsulas and connect Michigan and Huron. The Mackinac Bridge Authority (MBA) takes care of the bridge and collects a toll from drivers. As of 2012, it cost $4 for cars to cross. The MBA also helps drivers who are afraid of bridges by driving their cars across for them. Because the bridge is usually only for cars, bicyclists and snowmobiles need to be shuttled across for a fee. The MBA has a small police department to patrol the bridge and help drivers. They also have radio stations (AM 530 and AM 1610) that share bridge conditions and travel information.

Upper Peninsula

North of St. Ignace

North of the Mackinac Bridge, I-75 passes west of downtown St. Ignace. There's an exit north of the toll plaza that marks the eastern end of US-2 and the start of a business loop for St. Ignace (BL I-75). The LMCT follows US-2, while the LHCT follows BL I-75 through town. The freeway curves around Chain Lake and the Mackinac County Airport. It meets the northern end of the business loop near Castle Rock, where the LHCT rejoins I-75. As it continues north, M-123 joins from the west. I-75 crosses the Carp River and follows the shores of St. Martin Bay before meeting M-134. At that exit, the LHCT leaves again to go east. In this area, the freeway continues northeast through the Hiawatha National Forest.

I-75 crosses the Pine River before entering Chippewa County. The freeway goes more north, passing under M-48 without an exit. Further north, M-48 connects I-75 with Rudyard, and the freeway turns back northeast. About 5 miles (8 km) northeast of Rudyard, I-75 passes the Chippewa County International Airport, which used to be Kincheloe Air Force Base. North of there, in Dafter, the freeway meets M-28. Beyond that exit, I-75 picks up the Lake Superior Circle Tour (LSCT) designation, which it carries all the way north. On the south side of Sault Ste. Marie, the freeway meets a business spur (BS I-75) and picks up the LHCT one more time. I-75 goes around the west side of the city, passes the Sault Ste. Marie Municipal Airport and Lake Superior State University. Finally, it reaches the customs and toll plazas for the International Bridge. From there, I-75 crosses the two-lane bridge and ends at the Canadian border. As of 2012, the toll to cross the bridge was $3 for cars.

History of I-75

From Trails to Highways

Map of the pre-statehood Indian trails

Before Michigan became a state, the first travel paths were Native American trails. For example, the French-Indian Trail ran through southeastern Michigan. The Saginaw Trail went north from Detroit to the Saginaw area. Another path, the Cheboygan Trail, ran parallel to where I-75 is now. In the Upper Peninsula, an extension of the Mackinac Trail connected St. Ignace and Sault Ste. Marie.

In the 1800s, private companies built "plank roads" or turnpikes, which were often made of oak planks. Many of these replaced the old Indian trails. By the early 1900s, most of these plank roads were gone, and the state took them over.

The Michigan State Trunkline Highway System was created in 1913. Parts of this system were built along the future I-75 route. In 1919, these highways were marked on maps for the first time. When the United States Numbered Highway System was formed in 1926, many of these Michigan highways became part of the national system, like US-2, US-10, US-24, US-25, and US-27.

Building the Freeways

By 1945, a divided highway was opened near the Ohio state line. After World War II, Michigan planned to turn several highways into freeways. The path of what would become I-75 was included in these plans.

In the 1950s, the Michigan Turnpike Authority wanted to build a toll freeway in the state. This proposed turnpike would have run from near Toledo, through Detroit and Saginaw, all the way to the Mackinac Bridge. However, the state highway commissioner, Charles Ziegler, didn't want a separate agency building roads. He worked to stop the turnpike plans, even saying the state would build a free freeway next to it. Trucking companies also didn't like tolls and preferred a small gas tax increase.

When the federal government passed the Federal Aid Highway Act of 1956, it allowed for free Interstate Highways. This made the Michigan Turnpike plans less likely to happen. By 1958, the Michigan Townships Association called for the toll road authority to be shut down. In 1962, the state legislature finally ended the agency that wanted to build the turnpike.

The first parts of I-75 freeway opened in 1957 near the Ohio state line. The Mackinac Bridge opened on November 1, 1957. In 1959, I-75 signs were first put up along the Detroit–Toledo Expressway.

In 1960, sections of the freeway opened from Indian River north to Mackinaw City and from St. Ignace to Evergreen Shores. In 1961, the first Zilwaukee Bridge, a drawbridge over the Saginaw River, opened. This bridge would often cause long traffic jams when it opened for ships. That same year, a section of I-75 near Grayling opened.

By the end of 1962, more sections of I-75 were completed, including the part between Gaylord and Indian River. The International Bridge also opened in Sault Ste. Marie on October 31, 1962. In 1963, the remaining gaps in the freeway across the Upper Peninsula were finished. A section of I-75 in Northern Michigan was even named the most scenic new highway in the US by Parade magazine that year.

By 1970, I-75 through Detroit was completed. The final section of I-75 in Michigan, between Alger and Roscommon, opened on November 1, 1973.

Since 1973, some changes have been made. From 1973 to 1975, I-75 was made wider (from four to six lanes) in some areas. In 1986, US-10 was shortened, so it no longer ran with I-75. In 1988, the old Zilwaukee Bridge was replaced by a much taller, new bridge. In 2014, all of I-75 in Michigan was named the Tuskegee Airmen Memorial Highway. In 2017, the speed limit on I-75 between Bay City and Sault Ste. Marie was raised from 70 to 75 mph (113 to 121 km/h), except on the Mackinac Bridge.

Gateway Project

Construction in 2007 during the Gateway Project

Starting in 2008, a part of I-75 in Detroit was completely closed. This was for the Ambassador Gateway Project, which aimed to better connect I-75 and I-96 to the Ambassador Bridge. Traffic was rerouted during this time. The freeway reopened in June 2009. The project was finished in September 2012.

Future of I-75

A section of I-75 in Oakland County will get special lanes called high-occupancy vehicle lanes (HOV lanes). These lanes will be for cars with multiple people during busy times (6 a.m. to 9 a.m. and 3 p.m. to 6 p.m.). These HOV lanes are part of a big project to modernize I-75 and are expected to open in late 2023.

Freeway Names

Segments of I-75 in Michigan are named for Walter P. Chrysler (left) and Prentiss M. Brown (right) among others.

I-75 has six different names in Michigan. The very first part from the Ohio border to Detroit is called the Detroit–Toledo Expressway. The section through southern and central Detroit is known as the Fisher Freeway. It was named in 1970 after the Fisher Brothers, who started Fisher Body, a car company. After a curve in downtown Detroit, I-75 becomes the Walter P. Chrysler Freeway. This part is named after Walter P. Chrysler, who founded the Chrysler car company.

The entire length of I-75 in Michigan is officially the American Legion Memorial Highway. This name honors the American Legion, a group for military veterans.

Two other parts of I-75 near the Straits of Mackinac were named in 1976. The section from the Cheboygan–Otsego county line north to the Mackinac Bridge is named for G. Mennen Williams, a former governor of Michigan. The part in Mackinac County, from the northern end of the Mackinac Bridge, is named for Prentiss M. Brown. He was a former Congressman and Senator who helped with the Mackinac Bridge project.

Famous Bridges on I-75

I-75 uses three very important and large bridges in Michigan.

Zilwaukee Bridge

Zilwaukee Bridge

The first big bridge is the Zilwaukee Bridge near Saginaw. The original bridge there, built in 1960, was a drawbridge. This meant it had to open for ships, causing traffic jams on I-75 that could last for hours! A new, much higher bridge was approved in 1974. Construction started in 1979. In 1982, there was a big accident during construction when a part of the bridge collapsed. This delayed the project. The new Zilwaukee Bridge was supposed to cost $76.8 million and be finished by 1983. But it ended up costing $131.3 million and opened on September 19, 1988. This bridge is the largest concrete bridge of its kind in the United States.

Mackinac Bridge

Mackinac Bridge

The second famous bridge is the Mackinac Bridge, often called the "Mighty Mac." It connects Michigan's two peninsulas across the Straits of Mackinac. People first thought about building a bridge here in 1888. Car ferry service started in 1923 to cross the straits. An authority was created in 1934 to study building a permanent bridge. Early plans involved connecting several islands. However, the collapse of another bridge (the Tacoma Narrows Bridge) and World War II delayed plans.

The current bridge authority was created in 1950. They were allowed to sell bonds to pay for construction in 1952. The bridge cost $99.8 million. Construction started in 1954, and the Mackinac Bridge opened to traffic on November 1, 1957. The bridge is very long, with a main span of 3,800 feet (1,158 meters). The total length of the structure is about 5 miles (8 km)! It has two tall towers, 555 feet (169 meters) high, and ships can pass underneath with 155 feet (47 meters) of clearance. In 2000, the bridge was named "Michigan's No. 1 Civil Engineering Project of the 20th Century."

International Bridge

Part of the International Bridge

The northernmost of the three big bridges on I-75 is the International Bridge. This bridge connects the two cities named Sault Ste. Marie: one in Michigan and one in Ontario, Canada. Governments from both sides created a bridge authority in 1935. Construction started on September 16, 1960.

The International Bridge is almost 3 miles (5 km) long. It has spans over the American and Canadian shipping channels for the Soo Locks and the St. Marys River. The bridge cost $20 million and opened to traffic on October 31, 1962.

Related Highways

Michigan has four special Interstate Highways that connect to I-75.

• I-275 is a loop that helps drivers get to western Wayne County and the Detroit Metropolitan Wayne County Airport.
• I-375 was once the shortest signed Interstate in the country. It serves the downtown Detroit area.
• I-475 is known as the UAW Freeway. It goes through downtown Flint, while I-75 goes around the west side of the city.
• I-675 is a loop into the city of Saginaw. It used to be an alternate route for I-75 when the old drawbridge over the Saginaw River was still in use.

Besides these, there are eight "business routes" related to I-75 in Michigan. These special routes help drivers get into the downtown areas of cities like Pontiac, Bay City, West Branch, Roscommon, Grayling, Gaylord, St. Ignace, and Sault Ste. Marie.

Images for kids

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  I-75 northbound approaching exit 2 in Monroe County

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  Looking south along the Chrysler Freeway to the Detroit skyline

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  Split between I-75 and US 23 west of Standish

• 

  Exit 254 south of Grayling

• 

  I-75 crossing the Mackinac Bridge

• 

  North of St. Ignace

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  Map of the pre-statehood Indian trails

• 

  1955 map of the proposed Michigan Turnpike

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  Markers such as this one bearing the state name originally used when I-75 was first signed

• 

  1958 numbering plan for Michigan's Interstates

• 

  Construction in 2007 during the Gateway Project

• 

  Portrait of Walter P. Chrysler

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  Portrait of Prentiss M. Brown

• 

  Zilwaukee Bridge

• 

  Aerial photograph of the Mackinac Bridge

• 

  Part of the International Bridge

• 

  Southern end of the business loop for St. Ignace

County	Location	mi	km	Exit	Destinations	Notes
Monroe	Erie Township	0.000	0.000		I-75 south / LECT south – Toledo	Ohio state line; LECT continues south into Ohio
		1.587	2.554	2	Summit Street	Southbound exit and northbound entrance
		2.547	4.099	2	Erie, Temperance	Northbound exit and southbound entrance; unsigned Connector 75 (Summit Street)
		4.610	7.419	5	Erie Road – Erie, Temperance
	Luna Pier	5.785	9.310	6	Luna Pier	Connects to Luna Pier Road
	La Salle Township	8.629	13.887	9	South Otter Creek Road – La Salle
	Monroe Charter Township	11.357	18.277	11	La Plaisance Road – Downtown Monroe
	Monroe	13.452	21.649	13	Front Street – Monroe
		13.583	21.860	14	Elm Avenue
	Frenchtown Charter Township	15.230	24.510	15	Dixie Highway – Downtown Monroe	Former M-50
		18.040	29.033	18	Nadeau Road
		20.310	32.686	20	I-275 north – Flint	To Detroit Metro Airport; southern terminus of I-275
	Berlin Charter Township	21.463	34.541	21	Swan Creek Road – Newport	To Newport Road
	South Rockwood	26.342	42.393	26	South Huron River Drive – South Rockwood
Wayne	Rockwood	26.941	43.357	27	North Huron River Drive – Rockwood
	Brownstown Charter Township	27.680	44.547	28	M-85 north / LECT north (Fort Street)	Northbound exit and southbound entrance; southern terminus of M-85 and northern end of LECT concurrency
	Flat Rock	28.824	46.388	29	Gibraltar, Flat Rock	Signed as exits 29A (Gibraltar) and 29B (Flat Rock) southbound; connects to Gibraltar Road
	Woodhaven	31.821	51.211	32	West Road – Trenton, Grosse Ile, Woodhaven, Brownstown Township	Signed as exits 32A (east, Trenton, Grosse Ile) and 32B (west, Woodhaven, Brownstown Township)
	Brownstown Charter Township	33.707– 33.783	54.246– 54.368	34A	Dix–Toledo Highway	Signed as exit 34 northbound; converted to complete interchange in 2012
		34.012	54.737	34B	Sibley Road	Southbound exit and northbound entrance; missing connections provided via exit 34A
	Taylor	34.794	55.996	35	US 24 (Telegraph Road)	Northbound exit to northbound US 24 and southbound entrance from southbound US 24 only; unsigned Connector 240
		35.961	57.874	36	Eureka Road
	Taylor–Southgate city line	36.800– 37.311	59.224– 60.046	37	Allen Road, Northline Road
	Lincoln Park	39.875	64.173	40	Dix Highway	No access from southbound I-75 to northbound Dix Highway, northbound Dix Highway to southbound I-75, or southbound Dix Highway to northbound I-75
		40.686– 40.711	65.478– 65.518	41	M-39 (Southfield Road)
	Melvindale	41.827	67.314	42	Outer Drive
	Detroit	42.999	69.200	43	M-85 (Fort Street) / LECT / Schaefer Highway	Southern end of LECT concurrency; signed as exits 43A (Schaefer Highway south, M-85 [Fort Street]) and 43B (Schaefer Highway north) southbound; former northern terminus of M-85
		44.862	72.198	44	Dearborn Street	Northbound exit and southbound entrance
		45.594	73.376	45	M-85 (Fort Street) / Springwells Street
		46.484	74.809	46	Livernois Avenue	Interchange permanently closed; to be replaced in 2024 by currently under construction ramps to/from the United States Port of Entry for the Gordie Howe International Bridge
		47.276	76.083	47A	Clark Street	Former M-3
		48.020	77.281	47B	Bridge to Canada LECT	Northbound exit and southbound entrance; northern end of LECT concurrency; to Highway 3
		48.062	77.348	47C	Vernor Highway Bridge to Canada	No northbound entrance from Vernor Highway; signed as exits 47C (Vernor Highway) and 47B (Ambassador Bridge) southbound
		47.894– 49.108	77.078– 79.032	48	I-96 west (Jeffries Freeway) to US 12 (Michigan Avenue) / I-94 – Lansing	Eastern terminus of I-96
		49.878– 49.108	80.271– 79.032	49	M-10 (Lodge Freeway) / Rosa Parks Boulevard – Southfield, Huntington Place	Signed as exits 49A (Rosa Parks Boulevard) and 49B (M-10) southbound
		50.171	80.742	50	M-5 (Grand River Avenue)	Access to Comerica Park, Ford Field, Fox Theatre, and Little Caesars Arena
		50.581	81.402	51A	M-1 (Woodward Avenue) / John R. Street / Brush Street	No southbound entrance; exit eliminated in 1999; northbound entrance still exists
		50.717	81.621	51B	M-3 (Gratiot Avenue via Fisher Freeway)	No entrance from northbound M-3
		50.864– 50.896	81.858– 81.909	51C	I-375 south (Chrysler Freeway) – Downtown Detroit	Northern terminus of I-375; 25 mph (40 km/h) speed advisory northbound
		51.551– 51.560	82.963– 82.978	52	Mack Avenue
		52.291– 52.305	84.154– 84.177	53A	Warren Avenue
		52.853– 52.870	85.059– 85.086	53B	I-94 (Ford Freeway) – Port Huron, Chicago	Exit 216A on I-94
		53.581	86.230	54	East Grand Boulevard, Clay Avenue
	Hamtramck	54.212– 54.941	87.246– 88.419	55	Holbrook Avenue, Caniff Avenue
	Detroit	55.965	90.067	56	M-8 (Davison Freeway)	Signed as exits 56A (east) and 56B (west)
		56.741– 56.752	91.316– 91.333	57	McNichols Road
		57.822	93.055	58	7 Mile Road
Wayne–Oakland county line	Detroit–Hazel Park city line	58.811– 58.819	94.647– 94.660	59	M-102 (8 Mile Road)
Oakland	Hazel Park	59.918– 60.104	96.429– 96.728	60	John R. Road, 9 Mile Road
	Hazel Park–Ferndale– Madison Heights–Royal Oak city quadripoint	61.183– 61.207	98.464– 98.503	61	I-696 (Reuther Freeway) – Port Huron, Lansing	Exit 18 on I-696
	Royal Oak–Madison Heights city line	62.189	100.083	62	11 Mile Road
	Madison Heights	63.180	101.678	63	12 Mile Road	To be reconstructed into a diverging diamond interchange in 2022
	Madison Heights–Troy city line	65.211	104.947	65	14 Mile Road	Reconstructed into a diverging diamond interchange in 2020
	Troy	67.429	108.516	67	Rochester Road
		68.972	111.000	69	Big Beaver Road	Reconstructed into a diverging diamond interchange in 2020
		71.593	115.218	72	Crooks Road	Indirect access to Crooks Road via trumpet interchange with Corporate Drive
	Bloomfield Township	74.138	119.314	74	Adams Road
		75.179– 76.063	120.989– 122.412	75	BL I-75 north (Square Lake Road)	Signed only as Square Lake Road southbound; southern terminus of BL I-75
	Auburn Hills	77.351– 77.369	124.484– 124.513	77	M-59 – Utica, Pontiac	Signed as exits 77A (east) and 77B (west); exit 40 on M-59
		78.547	126.409	78	Chrysler Drive	Access to Featherstone Road
		79.040	127.203	79	University Drive – Rochester	Reconstructed into the first diverging diamond interchange in Michigan in 2015
		80.994	130.347	81	BL I-75 south – Pontiac M-24 north – Lapeer	Signed as only M-24 northbound; double trumpet interchange; northern terminus of BL I-75 and southern terminus of M-24
		82.911	133.432	83	Joslyn Road	Signed as exits 83A (north) and 83B (south) southbound; east entrance to Great Lakes Crossing Outlets
		84.128	135.391	84	Baldwin Road	Signed as exits 84A (north) and 84B (south) northbound; west entrance to Great Lakes Crossing Outlets
	Independence Township	88.752	142.832	89	Sashabaw Road	Signed as exits 89A (north) and 89B (south) northbound
		90.812	146.148	91	M-15 – Clarkston, Davison
	Springfield Township	92.653	149.111	93	US 24 south (Dixie Highway) – Waterford	Northern terminus of US 24
		97.995	157.708	98	East Holly Road
	Groveland Township	100.963	162.484	101	Grange Hall Road – Fenton, Ortonville
Oakland–Genesee county line	Holly– Grand Blanc township line	105.941– 106.308	170.496– 171.086	106	Dixie Highway Saginaw Road	Indirect access in opposing directions via Michigan lefts; signed as Dixie Highway southbound and Saginaw Road northbound
Genesee	Grand Blanc Township	108.676	174.897	108	Holly Road – Grand Blanc
		109.905	176.875	109	M-54 north (Dort Highway) – Burton	Southern terminus of M-54
		111.622– 111.899	179.638– 180.084	111	I-475 north – Downtown Flint	Northbound exit and southbound entrance; southern terminus of I-475
	Mundy Township	115.017– 115.335	185.102– 185.614	115	US 23 south – Ann Arbor	Southern end of US 23 concurrency; southbound exit and northbound entrance
	Flint	116.334	187.221	116	Bristol Road – Bishop International Airport	Signed as exits 116A (east) and 116B (west, Bishop Airport) southbound; former M-121
	Flint Township	117.221– 117.662	188.649– 189.359	117	I-69 / Miller Road – Port Huron, Lansing	Signed as exits 117A (I-69) and 117B (Miller Road); combined ramp southbound; exit 133 on I-69
		118.756	191.119	118	M-21 (Corunna Road) – Owosso
	Mount Morris Township	121.968	196.288	122	Pierson Road – Flushing
		123.972	199.514	—	Coldwater Road	Interchange eliminated in 1967
		125.191– 125.846	201.475– 202.530	125	I-475 south – Downtown Flint	Northern terminus of I-475
		125.992	202.764	126	Mt. Morris	Connects to Mt. Morris Road
	Vienna Township	130.078	209.340	131	M-57 – Clio, Montrose
Saginaw	Birch Run	136.159	219.127	136	M-54 south / M-83 north – Birch Run, Frankenmuth	Northern terminus of M-54; southern terminus of M-83; Frankenmuth signed northbound only
	Bridgeport Township	144.562	232.650	144	Frankenmuth, Bridgeport	Signed as exits 144A (Frankenmuth) and 144B (Bridgeport) northbound; connects to Dixie Highway
	Buena Vista Township	149.285	240.251	149	M-46 – Sandusky, Buena Vista
		149.593	240.747	150	I-675 north – Downtown Saginaw	Southern terminus of I-675
		151.765	244.242	151	M-81 – Caro, Reese
		152.977	246.193	153	M-13 (East Bay City Road) – Saginaw
	Saginaw River	152.612– 154.144	245.605– 248.071	Zilwaukee Bridge
	Zilwaukee	153.922	247.713	154	Zilwaukee	Connects to Adams Street
	Zilwaukee Township	154.849– 154.875	249.205– 249.247	155	I-675 south – Downtown Saginaw	Northern terminus of I-675
Bay	Frankenlust Township	160.218	257.846	160	M-84 (Westside Saginaw Road)
	Monitor Township	162.699– 162.711	261.839– 261.858	162	US 10 west – Midland M-25 east (BS I-75) – Downtown Bay City	Eastern terminus of US 10; western terminus of BS I-75/M-25; signed as exits 162A (east) and 162B (west); exit 140 on US 10
		163.983	263.905	164	Conn. M‑13 north / Wilder Road – Kawkawlin	Northbound exit and southbound entrance; northbound access to Wilder Road; southern terminus of Conn. M-13
		164.775	265.180	164	Wilder Road	Southbound exit and northbound entrance; southbound access to Conn. M-13
	Kawkawlin Township	168.945	271.891	168	Beaver Road
	Fraser Township	173.912	279.884	173	Linwood Road
	Pinconning Township	181.927	292.783	181	Pinconning Road
Arenac	Lincoln Township	188.476– 188.518	303.323– 303.390	188	US 23 north – Alpena, Standish	Northern end of US 23 concurrency
		190.885	307.200	190	M-61 – Gladwin, Standish
	Adams Township	195.009	313.837	195	Sterling Road
	Moffatt Township	202.817	326.402	202	M-33 north – Alger, Rose City	Southern terminus of M-33
Ogemaw	Horton Township	212.118	341.371	212	BL I-75 north (Cook Road) – West Branch	Southern terminus of BL I-75; BL I-75 signed northbound only
	Ogemaw Township	215.670	347.087	215	M-55 east / BL I-75 south to M-30 – Tawas City, West Branch	Eastern end of M-55 concurrency; northern terminus of BL I-75; BL I-75 signed southbound only
Roscommon	Richfield Township	222.821	358.596	222	Old 76 – St. Helen	Former M-76
	Backus Township	227.578	366.251	227	M-55 west to F-97 – Cadillac, Houghton Lake	Western end of M-55 concurrency; Houghton Lake signed northbound only
	Higgins Township	239.631	385.649	239	M-18 / BL I-75 north – Roscommon, South Higgins Lake State Park, Houghton Lake, Gladwin	Southern terminus of BL I-75; BL I-75, South Higgins Lake State Park, and Roscommon signed northbound only, Gladwin and Houghton Lake signed southbound only
Roscommon–Crawford county line	Gerrish–Beaver Creek township line	244.243	393.071	244	BL I-75 south – Roscommon, North Higgins Lake State Park	Northern terminus of BL I-75; North Higgins Lake State Park signed northbound only, BL I-75 and Roscommon signed southbound only
Crawford	Beaver Creek Township	250.155	402.585	249	US 127 south – Lansing, Clare	Southbound exit and northbound entrance only; northern terminus of US 127
	Beaver Creek–Grayling township line	251.020	403.978	251	4 Mile Road
	Grayling	254.028	408.818	254	BL I-75 north to M-72 – Downtown Grayling, Traverse City	Northbound exit and southbound entrance only; southern terminus of BL I-75
		256.131	412.203	256	North Down River Road	Southbound exit and northbound entrance
	Grayling Township	259.191	417.127	259	M-93 / BL I-75 south (Hartwick Pines Road) to M-72 – Downtown Grayling, Traverse City	Signed as only M-93 (Hartwick Pines Road) northbound; northern terminus of BL I-75
	Maple Forest Township	264.224	425.227	264	Frederic, Lewiston	Connects to CR 612
Otsego	Otsego Lake Township	270.818	435.839	270	Waters	Connects to Marlette Road
	Bagley Township	279.067	449.115	279	BL I-75 north (Old 27) – Downtown Gaylord	Former US 27; signed as only Old 27 southbound; southern terminus of BL I-75
	Gaylord	281.953	453.759	282	M-32 / BL I-75 south – Downtown Gaylord, Alpena	Signed as only M-32 northbound; northern terminus of BL I-75
	Vanderbilt	290.707	467.848	290	Vanderbilt	Connects to Old US 27 (Mill Street); eastern terminus of C-48
Cheboygan	Nunda Township	300.967	484.359	301	C-58 – Wolverine
	Indian River	310.156	499.148	310	M-68 – Indian River, Rogers City
		313.646	504.764	313	M-27 north – Topinabee, Cheboygan	Southern terminus of M-27
	Munro Township	322.524	519.052	322	C-64 – Cheboygan, Pellston
	Hebron Township	326.726	525.815	326	C-66 – Cheboygan, Cross Village
	Mackinaw Township	335.632	540.147	336	US 31 south / LMCT south – Petoskey, Charlevoix	Southbound exit and northbound entrance; northern terminus of US 31 and southern end of LMCT concurrency
Cheboygan–Emmet county line	Mackinaw–Wawatam township line	337.750	543.556	337	Nicolet Street – Mackinaw City	Northbound exit and southbound entrance; southern terminus of the former M-108
Emmet	Mackinaw City	338.434	544.657	338	US 23 south / LHCT south – Cheboygan, Rogers City, Alpena	Southbound exit and northbound entrance; northern terminus of US 23; southern end of LHCT, signed as the GLCT from here north
		338.754	545.172	338	Michigan Welcome Center	Northbound exit only; connects to Nicolet Street
		339.234	545.944	339	Jamet Street	Right-in/right-out interchange; signed only as Mackinaw City southbound
Straits of Mackinac		339.252– 343.349	545.973– 552.567	Mackinac Bridge (tolled)
Mackinac	St. Ignace	343.662	553.070	343	Bridge View	Southbound exit only; connects to Densmore Avenue
		344.228	553.981	344	US 2 west / LMCT west – Manistique, Escanaba BL I-75 north / LHCT north – St. Ignace	Northern end of GLCT (LHCT, LMCT) concurrency; signed as exits 344A (north) and 344B (west) northbound; BL I-75 not signed southbound; eastern terminus of the western US segment of US 2; southern terminus of BL I-75; LMCT follows exit 344A to US 2 and LHCT follows exit 344B to BL I-75
		344.936	555.121	345	Portage Street – St. Ignace	Southbound exit and northbound entrance
	St. Ignace Township	347.938	559.952	348	BL I-75 south / LHCT – St. Ignace H-63 north / Mackinac Trail	southern end of LHCT concurrency; signed as BL I-75 southbound and H-63 northbound; northern terminus of BL I-75 and southern terminus of H-63
		352.004	566.496	352	M-123 north – Newberry	Southern terminus of M-123
		359.233	578.129	359	M-134 east / LHCT east – Drummond Island, De Tour Village	Northern end of LHCT concurrency; western terminus of M-134
Chippewa	Rudyard Township	373.587	601.230	373	M-48 east (H-40) – Pickford, Rudyard	Western terminus of M-48
	Kinross Township	377.753	607.935	378	M-80 east – Kinross	Western terminus of M-80
		379.520	610.778	379	Gaines Highway – Barbeau Area
	Dafter Township	386.166	621.474	386	M-28 / LSCT west – Munising, Newberry	Southern end of LSCT concurrency
	Sault Ste. Marie	392.473	631.624	392	BS I-75 north (3 Mile Road) / LHCT – Sault Ste. Marie	Southern end of LHCT concurrency signed as GLCT concurrency
		394.649	635.126	394	Easterday Avenue – Sault Ste. Marie, Soo Locks
		394.826	635.411	Toll Plaza (northbound) U.S. Customs (southbound)
St. Marys River		395.035– 395.916	635.747– 637.165	International Bridge (tolled) to Canada
1.000 mi = 1.609 km; 1.000 km = 0.621 mi