Interstate 75 in Michigan

This article is about the section of highway in Michigan. For the entire length of freeway, see Interstate 75.

Interstate 75
I-75 highlighted in red
Route information
Maintained by MDOT
Length:	395.54 mi (636.56 km)
Existed:	1958 – present
Tourist routes:	Lake Erie Circle Tour, Lake Huron Circle Tour, Lake Michigan Circle Tour, Lake Superior Circle Tour
Major junctions
South end:	I-75 near Erie
	I-96 in Detroit I-94 in Detroit US 23 in Flint I-69 in Flint US 10 in Bay City US 127 near Grayling
North end:	Canadian border on Int'l 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 • Heritage Routes ← M-74 M-75 →

Interstate 75 (I-75) is a part of the Interstate Highway System and runs from Miami, Florida to Sault Ste. Marie in the Upper Peninsula of Michigan. I-75 enters the state from Ohio in the south, just to the north of Toledo. It runs generally north through Detroit, Pontiac and Bay City, crossing the Mackinac Bridge and ending at the Canadian border in Sault Ste. Marie. On the Canadian side, drivers must use a series of city streets in Sault Ste. Marie, Ontario to reach Highway 17, the local route of the Trans-Canada Highway. The total length in Michigan is 395 miles (636 km).

Route description

Mackinac Bridge

I-75 connects Michigan's Upper and Lower Peninsulas via the 5-mile (8.0 km) long suspension Mackinac Bridge.

At the northern end of I-75, at Sault Ste. Marie, Michigan, the Sault Ste. Marie International Bridge leads into Canada, into Sault Ste. Marie, Ontario. This is the closest connection of any Interstate to the Trans-Canada Highway.

In Detroit, the spur route I-375 is the shortest signed spur of I-75 at 1.06 miles (1.71 km). Interstate 375 is the shortest signed Interstate Highway. In addition, at that same junction, the I-75 curve where it shifts from the Fisher Freeway to the Chrysler Freeway is one of the sharpest on a mainline route in the entire Interstate system, with a 25 mph (40 km/h) advisory speed.

Names

• The section in Cheboygan County from the southern end of the Mackinac Bridge to the south is known as the G. Mennen Williams Freeway.
• The section from the northern end of the Mackinac Bridge in Mackinac County proceeding north is known as the Prentiss M. Brown Freeway.
• The section between downtown Detroit and Pontiac is known as the (Walter P.) Chrysler Freeway. It is one of busiest segments of I-75 and hosts one of the perennially busiest segments of freeways in Michigan. The Chrysler Freeway continues south as I-375.
• The section through Southern and central Detroit to the Chrysler Freeway is known as the Fisher Freeway
• The section south of the Fisher Freeway is called the Detroit–Toledo Freeway south to the Ohio state line.

History

Pre designation

Prior to any segment of freeway in Michigan being designated as part of Interstate 75 various sections of it had been constructed.

Between the mid and late 1950s the following sections were constructed:

• US 2 between what is now known as BL I-75 in St. Ignace and M-123 was the Upper Peninsula's first segment.
• Alt US 24 between Ohio border and US 25 (now M-125) was the first segment of Michigan's I-75 to cross the state border; and the only freeway to cross the border until the early 1960s.
• Mackinac Bridge (on what was then US 27) was completed in 1957.
• The Fenton-Clio Expressway was completed in 1958 which was a realignment of US 23
• M-20 (now part of US 10) - when this segment became US 10; it carried the temporary Interstate 75 designation.

This transport-related list is incomplete; you can help by expanding it.

Post designation

In 1960 the Zilwaukee Bridge, a Bascule bridge across the Saginaw River was constructed.

In the 1960s, I-75 had several discontiguous segments connected with roads with "TO I-75" signs in addition to US 10 doubling as "TEMP I-75".

The section between Grayling, Michigan and M-32 was built in 1961. Between Higgins Lake and Grayling, it was built by converting the northbound lanes of U.S. Route 27 to southbound lanes and building a new set of northbound lanes leaving the former southbound lanes as a strip of grass. The terminus of the freeway near downtown Grayling was converted to a partial interchange for what would become BL I-75. Alongside that, the former segment of US 27 between Grayling and Gaylord, Michigan was turned back to local control. After this individual segment of freeway was completed, it left a gap between Gaylord and Indian River which was filled in a year later. While the gap was being filled in, a special "TO I-75" designation was applied to the former segment of US 27. Around that time, US 27's northern terminus was scaled back to 5 miles (8.0 km) south of Grayling until it was redesignated as an extension of US 127 in 2001.

A 12-mile (19 km) section of I-75 was opened between Gaylord and Waters in July 1962.

In Detroit the Fisher Freeway was built in 'the early 1960s' and then the Chrysler Freeway in 1967.

Until the early 1970s, I-75 between Bay City and Grayling was routed west to Clare (along US-10 then north along then-US-27, and was signed as "TEMP I-75". This freeway segment had some at-grade intersections at the time. In 2002 the portion between Clare and Grayling was redesignated as an extension of US 127, although it was posted as US 127 on a National Geographic road atlas in the year 2000.

The section between Alger and Roscommon was completed in 1973, and the temporary section reverted to U.S. routes, although of freeway quality.

Until the completion of I-75 in 1973, the stretch of freeway between Standish and West Branch had the designation of M-76. When the I-75 signs were erected along the freeway, M-76 vanished from the state road map after 53 years of existence.

In the 1988 the original bascule Zilwaukee Bridge across the Saginaw River was replaced by a much higher structure slightly north of the former bridge.

Until 1987, US 10 and I-75 were the same road between Bay City and Clarkston. Both also overlapped US 23 between Bay City and Flint. Now, Bay City serves as the eastern terminus of US 10.

As late as 1990, US 31 and US 23 both had their northern termini on I-75's southern approach to the Mackinac Bridge. Even though US 27 was scaled back 94 miles (from Mackinaw City to south of Grayling) in 1961, a lone sign assembly showed all three US highways ending at the same place as late as 1971.

Late 2000s

Beginning on February 25, 2008, the Interstate closed completely to traffic in both directions from Rosa Parks Boulevard (Exit 49) to Clark Street (Exit 47) in Detroit. This facilitated the complete rebuilding of the road as part of the Gateway Project to better connect Interstates 75 and 96 to the Ambassador Bridge. Through traffic on 75 was instructed to take I-94 to I-275 and local detours were posted. The freeway re-opened to through traffic in July 2009, hence about all of the signs on I-75 within Detroit's city limits are in the Clearview typeface.

Spur routes

• I-275 - Begins as a loop from Northern Monroe County and continues to connect up with Interstate 696. Was going to connect back up with I-75 north of Pontiac. Serves the Western population of Wayne County and Detroit Metro Airport.

• I-375 - Is the shortest signed Interstate in the nation. It serves the immediate downtown Detroit area.

• I-475 - Known as the U.A.W. Freeway. Serves Flint's downtown areas as I-75 goes to the west side of the city.

• I-675 - A loop into the city of Saginaw and back out north of the city. Served as an alternate to I-75 when the drawbridge over the Saginaw River was still operating.

Exit list

County	Location	Mile	Exit	Destinations	Notes
Monroe	Erie Township	0.00		I-75 – Toledo	Ohio state line
		1.66	2	Summit Street	Southbound exit and northbound entrance
		2.49	2	CONN M-125 – Erie	Northbound exit and southbound entrance
		4.60	5	Erie Road – Erie, Temperance	Diamond interchange
	Luna Pier	5.78	6	Luna Pier	Diamond interchange
	La Salle Township	8.62	9	South Otter Creek Road – La Salle	Folded diamond interchange
	Monroe Charter Township	11.36	11	La Plaisance Road – Downtown Monroe	Diamond interchange
	Monroe	13.45	13	Front Street – Monroe	Folded diamond interchange
		13.57	14	Elm Avenue	Folded diamond interchange
	Frenchtown Charter Township	15.21	15	Dixie Highway – Downtown Monroe	Former M-50; diamond interchange
		18.03	18	Nadeau Road	Diamond interchange
		20.26	20	I-275 north – Flint	To Detroit Metro Airport
	Berlin Charter Township	21.45	21	Swan Creek Road – Newport	To Newport Road; folded diamond interchange
	South Rockwood	26.32	26	South Huron River Drive – South Rockwood
Wayne	Rockwood	26.93	27	North Huron River Drive – Rockwood	Folded diamond interchange
	Brownstown Charter Township	27.96	28	M-85 north (Fort Street) / LECT	Northbound exit and southbound entrance; southern terminus of M-85 and northern end of LECT concurrency; half trumpet interchange
	Flat Rock	28.80	29	Gibraltar, Flat Rock	Signed as exits 29A (Gibraltar) and 29B (Flat Rock) southbound. Six-ramp parclo AB4 interchange
	Woodhaven	31.79	32	West Road	Signed as exits 32A (east) and 32B (west); six-ramp parclo B4 interchange
	Brownstown Charter Township	33.67	34A	To US 24 (Telegraph Road)	Southbound exit and northbound entrance; partial diamond interchange
		34.00	34B	Sibley Road, Dix Highway	Signed as exit 34 northbound; diamond interchange
	Taylor	35.06	35	US 24 (Telegraph Road)	Northbound exit and southbound entrance; partial Y interchange.
		35.92	36	Eureka Road	Four-ramp parclo A3 interchange
	Taylor– Southgate	37.06	37	Allen Road, Northline Road	Diamond interchange
	Lincoln Park	39.84	40	Dix Highway	Two-level turbine interchange
		40.67	41	M-39 (Southfield Road)	Six-ramp parclo A4 interchange
	Melvindale	41.81	42	Outer Drive	Diamond interchange
	Detroit	43.13	43	M-85 (Fort Street) / LECT / Schaefer Highway	Signed as exits 43A (south) and 43B (north) southbound; former northern terminus of M-85; Southern end of LECT concurrency; six-ramp parclo AB4 interchange
		44.83	44	Dearborn Street	Northbound exit and southbound entrance; partial diamond interchange
		45.57	45	M-85 (Fort Street) / Springwells Street	Diamond interchange
		46.46	46	Livernois Avenue	Diamond interchange
		47.42	47A	Clark Street	Former M-3, Signed as exit 47 northbound; diamond interchange
		48.02	47B	Ambassador Bridge to Canada LECT	To Highway 3; southbound exit and northbound entrance; northern end of LECT concurrency
		48.27	47C	Vernor Highway	Southbound exit and northbound entrance
		48.85	48	I-96 west (Jeffries Freeway) – Lansing	Eastern terminus of I-96
		49.87	49	M-10 (Lodge Freeway) / Rosa Parks Boulevard – Civic Center	Signed as exits 49A (Rosa Parks Boulevard) and 49B (M-10) southbound; three-level turbine interchange
		50.16	50	Grand River Avenue	Access to Comerica Park
		50.82	51B	M-3 (Gratiot Avenue via Fisher Freeway) to M-53	Signed as exit 51 northbound
		50.97	51C	I-375 south (Chrysler Freeway) – Downtown Detroit	Sharp turn 25 miles per hour (40 km/h); three-level turbine interchange
		51.76	52	Mack Avenue	Diamond interchange
		52.50	53A	Warren Avenue	Diamond interchange
		53.06	53B	I-94 (Ford Freeway) – Port Huron, Chicago	Three-level cloverstack interchange
		53.48	54	East Grand Boulevard, Clay Avenue	Diamond interchange
	Hamtramck	55.14	55	Holbrook Avenue, Caniff Avenue	Diamond interchange
	Detroit	56.17	56	M-8 (Davison Freeway)	Signed as exits 56A (east) and 56B (west); three-level turbine interchange
		56.95	57	McNichols Road	Diamond interchange
		58.02	58	7 Mile Road	Diamond interchange
Wayne–Oakland	Detroit– Hazel Park	59.01	59	M-102 (8 Mile Road)	Three-level diamond interchange
Oakland	Hazel Park	60.11	60	John R. Street, 9 Mile Road	Diamond interchange
	Hazel Park– Ferndale– Madison Heights– Royal Oak	61.40	61	I-696 (Reuther Freeway) – Port Huron, Lansing	Four-level stack interchange
	Royal Oak– Madison Heights	62.38	62	11 Mile Road, 10 Mile Road west	Diamond interchange
	Madison Heights	63.38	63	12 Mile Road	Six-ramp parclo A4 interchange
	Madison Heights– Troy	65.41	65	14 Mile Road	Signed as exits 65A (east) and 65B (west). Six-ramp parclo B4 interchange
	Troy	67.62	67	Rochester Road	Four-ramp parclo A2 interchange
		69.17	69	Big Beaver Road	Signed as exits 69A (east) and 69B (west); cloverleaf interchange with collector-distributor lanes
		72.28	72	Crooks Road	Indirect accsess to Crooks Road, requires exiting onto a trumpet interchange with Corporate Drive to reach Crooks Road
	Bloomfield Township	74.31	74	Adams Road	Folded diamond interchange
		75.64	75	BL I-75 north (Square Lake Road) – Pontiac	Signed as Square Lake Road southbound; full Y interchange
	Auburn Hills	77.58	77	M-59 – Utica, Pontiac	Signed as exits 77A (east) and 77B (west). Cloverleaf interchange
		78.59	78	Chrysler Drive	Access to Featherstone Road
		79.25	79	University Drive – Rochester	Six-ramp parclo A4 interchange
		81.22	81	M-24 / BL I-75 south – Lapeer, Oxford	Access to The Palace of Auburn Hills; double trumpet interchange
		83.11	83	Joslyn Road	Signed as exits 83A (north) and 83B (south) southbound; east entrance to Great Lakes Crossing; six-ramp parclo AB4 interchange
		84.34	84	Baldwin Road	Signed as exits 84A (north) and 84B (south) northbound; west entrance to Great Lakes Crossing; six-ramp parclo AB4 interchange
	Independence Township	88.75	89	Sashabaw Road
		90.99	91	M-15 – Clarkston, Davison	Six-ramp parclo A4 interchange
	Springfield Township	92.79	93	US 24 (Dixie Highway) – Waterford	Northern terminus of US 24
		98.21	98	East Holly Road	Folded diamond interchange
	Groveland Township	101.19	101	Grange Hall Road – Fenton, Ortonville	Four-ramp parclo A2 interchange
	Holly Township	106.33	106	Dixie Highway	Southbound exit and northbound entrance
		106.63	106	Saginaw Road – Grand Blanc	Northbound exit and southbound entrance
Genesee	Grand Blanc	108.86	108	Holly Road – Grand Blanc	Diamond interchange
		110.08	109	M-54 (Dort Highway) – Burton	Southern terminus of M-54; combination of a trumpet and cloverleaf interchange
		111.88	111	I-475 north – Downtown Flint	Northbound exit and southbound entrance; partial Y interchange
	Mundy Township	115.12	115	US 23 south – Ann Arbor	Southern end of US 23 concurrency; southbound exit and northbound entrance; partial Y interchange
	Flint	116.49	116	Bristol Road – Bishop International Airport	Signed as exits 116A (east) and 116B (west) southbound; former M-121; seven-ramp parclo AB4 interchange
	Flint Township	117.38	117	I-69 / Miller Road – Port Huron, Lansing	Signed as exits 117A (I-69) and 117B (Miller Road); I-69 interchange is a three-level cloverstack, Miller Road interchange is a four-ramp parclo A3 interchange
		118.91	118	M-21 (Corunna Road) – Owosso	Folded diamond interchange
	Mount Morris Township	122.11	122	Pierson Road – Flushing	Six-ramp parclo A4 interchange
		125.59	125	I-475 south – Downtown Flint	Semi-directional T interchange
		126.13	126	Mt. Morris	Diamond interchange
	Vienna Township	131.21	131	M-57 – Clio, Montrose
Saginaw	Birch Run	136.29	136	M-54 / M-83 – Birch Run, Frankenmuth	Northern terminus of M-54; southern terminus of M-83
	Bridgeport Township	144.69	144	Frankenmuth, Bridgeport	Signed as exits 144A (Frankenmuth) and 144B (Bridgeport) northbound
	Buena Vista Township	149.40	149	M-46 (Holland Avenue) – Sandusky	Signed as exits 149A (east) and 149B (west)
		149.72	150	I-675 north – Downtown Saginaw
		151.88	151	M-81 – Caro, Reese
		153.08	153	M-13 (East Bay City Road) – Saginaw
	Saginaw River		Zilwaukee Bridge
	Zilwaukee	154.02	154	Zilwaukee
	Zilwaukee Township	155.96	155	I-675 south – Downtown Saginaw
Bay	Frankenlust Township	160.30	160	M-84 (Saginaw Road)
	Monitor Township	162.81	162	US 10 west / M-25 east / BL I-75 east – Downtown Bay City, Clare	Eastern terminus of US 10; western terminus of M-25 and BL I-75; signed as 162A (east) and 162B (west)
		164.31	164	CONN M-13 – Kawkawlin
	Kawkawlin Township	168.05	168	Beaver Road
	Fraser Township	173.01	173	Linwood Road – Linwood
	Pinconning Township	181.02	181	Pinconning Road – Pinconning
Arenac	Lincoln Township	188.65	188	US 23 north – Alpena, Standish	Northern end of US 23 concurrency: Southbound exit and northbound entrance
		190.97	190	M-61 – Gladwin, Standish
	Adams Township	195.08	195	Sterling Road – Sterling
	Moffatt Township	202.87	202	M-33 north – Mio, Cheboygan
Ogemaw	Horton Township	212.13	212	BL I-75 north (Cook Road) – West Branch
	Ogemaw Township	215.73	215	M-55 east / BL I-75 south to M-30 – Tawas City, West Branch	Western end of M-55 concurrency
Roscommon	Richfield Township	222.83	222	Old 76 – St. Helen	Former M-76
	Backus Township	227.60	227	M-55 west – Cadillac, Houghton Lake	Eastern end of M-55 concurrency
	Higgins Township	239.61	239	M-18 / BL I-75 north – Roscommon, Houghton Lake
	Gerrish Township	244.26	244	BL I-75 south – Roscommon, North Higgins Lake State Park
Crawford	Beaver Creek Township	250.02	249	US 127 – Lansing, Clare	Southbound exit and northbound entrance; northern terminus of US 127
	Grayling Township	251.03	251	4 Mile Road
	Grayling	254.11	254	BL I-75 north to M-72 – Downtown Grayling, Traverse City	Northbound exit and southbound entrance
		256.14	256	North Down River Road	Southbound exit and northbound entrance
	Grayling Township	259.19	259	M-93 (Hartwick Pines Road) / BL I-75 south to M-72 – Downtown Grayling, Traverse City	Signed as M-93 only (northbound)
	Maple Forest Township	264.23	264	Frederic, Lewiston
Otsego	Otsego Lake Township	270.83	270	Waters
	Bagley Township	279.05	279	BL I-75 north (Old 27) – Downtown Gaylord	Former US 27; signed as Old 27 only (southbound)
	Gaylord	281.95	282	M-32 / BL I-75 south – Downtown Gaylord, Alpena	Signed as M-32 only (northbound)
	Vanderbilt	290.70	290	Old 27 – Vanderbilt
Cheboygan	Nunda Township	300.97	301	C-58 – Wolverine
	Indian River	310.16	310	M-68 – Indian River, Rogers City
		313.49	313	M-27 north – Cheboygan, Indian River	Southern terminus of M-27
	Munro Township	322.51	322	C-64 – Cheboygan, Pellston
	Hebron Township	326.71	326	C-66 – Cheboygan, Cross Village
	Mackinaw Township	335.69	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	Mackinaw Township– Wawatam Township	337.72	337	Nicolet Street north – Mackinaw City	Northbound exit and southbound entrance; southern terminus of the former M-108
Emmet	Mackinaw City	338.47	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	Michigan Welcome Center	Northbound exit only
		339.22	339	Jamet Street
Straits of Mackinac			Mackinac Bridge
Mackinac	St. Ignace	343.80	343	Bridge View Park	Southbound exit only
		344.38	344	US 2 west / BL I-75 north / GLCT – St. Ignace, Escanaba, Manistique	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
		345.08	345	Portage Street – St. Ignace	Southbound exit and northbound entrance
	St. Ignace Township	348.10	348	BL I-75 south / LMCT – St. Ignace H-63 north / Mackinac Trail	Signed as BL I-75 southbound and H-63 northbound; southern end of LMCT concurrency
		352.15	352	M-123 north – Newberry	Southern terminus of M-123
		359.37	359	M-134 east / LMCT – Drummond Island, De Tour Village	Western terminus of M-134; northern end of LMCT concurrency
Chippewa	Rudyard Township	373.71	373	M-48 east (H-40) – Pickford, Rudyard	Western terminus of M-48
	Kinross Township	377.88	378	M-80 east – Kinross	Western terminus of M-80
		379.64	379	Gaines Highway – Barbeau Area
	Dafter Township	386.27	386	M-28 / LSCT west – Munising, Newberry	Southern end of LSCT concurrency
	Sault Ste. Marie	392.57	392	BS I-75 north (3 Mile Road) / LMCT – Sault Ste. Marie	Southern end of LMCT concurrency signed as GLCT concurrency
		394.74	394	Easterday Avenue – Sault Ste. Marie, Soo Locks
St. Marys River			International Bridge to Canada
1.000 mi = 1.609 km; 1.000 km = 0.621 mi      Concurrency terminus •      Closed/former •      Incomplete access •      Unopened

See also

• Michigan Highways portal

External links

• I-75 at Michigan Highways
• Interstate 75 at Michigan Highway Ends

Interstate 75
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