|Maintained by MDOT|
|Length||202.317 mi (325.598 km)|
|Existed||October 11, 1967 –present|
|History||Completed October 17, 1992|
|South end||I-69 at the Indiana border near Kinderhook|
|East end||Highway 402 at Canadian border in Port Huron|
|Counties||Branch, Calhoun, Eaton, Clinton, Shiawassee, Genesee, Lapeer, St. Clair|
Interstate 69 (I-69) is a part of the Interstate Highway System that will eventually run from the Mexican border in Texas to the Canadian border at Port Huron, Michigan. In Michigan, it is a state trunkline highway that enters the state south of Coldwater and passes the cities of Lansing and Flint in the Lower Peninsula. A north–south freeway from the Indiana–Michigan border to the Lansing area, it changes direction to east–west after running concurrently with I-96. The freeway continues to Port Huron before terminating in the middle of the twin-span Blue Water Bridge while running concurrently with I-94 at the border. There are four related business loops for I-69 in the state, connecting the freeway to adjacent cities.
Predecessors to I-69 include the first M-29, US Highway 27 (US 27), M-78 and M-21. The freeway was not included on the original Interstate Highway System planning maps in the mid-1950s, but it was added in 1958 along a shorter route. Michigan built segments of freeway for the future Interstate in the 1960s, and the state was granted additional Interstate mileage in 1968 to extend I-69 north and east to Flint. Later extensions in 1973 and 1987 resulted in the modern highway. The first freeway segment designated as I-69 in Michigan opened in 1967, and the last was completed in 1992, finishing Michigan's Interstate System. US 27 previously ran concurrently with I-69 from the Indiana–Michigan state line north to the Lansing area, but this designation was removed in 2002.
The entirety of I-69 is listed on the National Highway System, vehicles on average each day between I-475 and M-54 in Flint and 14,085 vehicles between M-53 and Capac Road near the Lapeer–St. Clair county line, the highest and lowest traffic counts in 2012, respectively. I-69 carries the Lake Huron Circle Tour in the Port Huron area and the I-69 Recreational Heritage Route from the Indiana state line north to the Calhoun–Eaton county line. I-69 is mostly a four-lane freeway in the state of Michigan, with exceptions in the Lansing and Flint metro areas where it is six lanes and in Port Huron where it is three lanes westbound and three lanes eastbound until eastbound traffic splits into six lanes of local traffic to Port Huron and two lanes to the Blue Water Bridge.which is a network of roadways important to the country's economy, defense, and mobility. The freeway carries 91,100
I-69 in Michigan begins at the Indiana state line southeast of Kinderhook and just north of an interchange with the Indiana Toll Road, which carries I-80 and I-90. From there, I-69 runs northward through a mixture of Southern Michigan farmland and woodland in Branch County. A few miles north of the state line, the freeway passes Coldwater Lake State Park and its namesake body of water; north of the lake, there is a welcome center for the northbound lanes. I-69 curves around the east side of Coldwater, connecting to the city's business loop on the south of town. Immediately east of downtown, the freeway intersects the northern end of the business loop at an interchange that also features US 12 (Chicago Road). Farther north, the freeway turns to the northwest, crosses into Calhoun County and then over the St. Joseph River. I-69 turns back northward and bypasses Tekonsha to the town's west, intersecting M-60 in the process.
Curving around Nottawa Lake, I-69 continues northward through southern Calhoun County. It passes through an interchange that marks the southern terminus of M-227, a highway that connects northward into Marshall. The freeway crosses the Kalamazoo River and passes through an interchange with M-96 west of downtown Marshall. From that interchange northward, the BL I-94 designation is overlaid on I-69; the business loop ends at the cloverleaf interchange northwest of Marshall that marks the first of I-69's two junctions with I-94 in the state . North of I-94, I-69 has one more interchange at N Drive North before crossing into Eaton County.
In southern Eaton County, the freeway parallels the Battle Creek River north of the junction with M-78. Near Olivet, I-69 begins to turn in a northeasterly direction and curves around the north side of town. On the south side of Charlotte, I-69 turns northward, traversing an area to the east of downtown and crossing the former routing of US 27, which is now part of the business loop for the city. Farther north, the freeway has a junction with M-50, a bridge over the Battle Creek River, and an interchange with the northern end of the business loop next to Fitch H. Beach Airport. North of the airport, I-69 turns northeasterly again and parallels Lansing Road, the former route of US 27/M-78. The freeway meets the southern end of M-100 near Potterville and continues into the Lansing–East Lansing metropolitan area. Southwest of the state's capital city, I-69 crosses over Lansing Road near Lansing Delta Township Assembly, a factory for General Motors; northeast of the complex, I-69 merges into I-96. The combined I-96/I-69 runs northward through the suburban edges of the Lansing area, intersecting the western ends of I-496 and the BL I-69 for Lansing. The freeway enters Clinton County, and just north of a crossing of the Grand River, I-69 turns eastward to separate from I-96. As a part of the larger interchange with I-96, I-69 crosses BL I-96 (Grand River Avenue) without any connections.
After leaving the I-96 concurrency, I-69 changes cardinal orientation and is signed as east–west from that point on. The freeway continues parallel to the Looking Glass River through suburban areas north of Capital Region International Airport. North of East Lansing, I-69 meets US 127 at a cloverleaf interchange. East of that junction, I-69 turns southeasterly passing the Hawk Hollow Golf Course and Park Lake on the way to meet the eastern end of BL I-69 just north of Lake Lansing. I-69 then turns northeasterly parallel to Lansing Road (Old M-78) to enter Shiawassee County. The freeway continues through Central Michigan farmlands, jogging north of Perry and Bancroft.
At Durand, I-69 meets the southeastern end of M-71 on the northwest side of town. The freeway turns sharply to the northeast before turning due east near Lennon. The interchange with M-13 south of Lennon marks the Shiawassee–Genesee county line. Continuing eastward, I-69 parallels Miller Road to the north as far as the city of Swartz Creek; east of town, the two roadways cross. 23 southwest of downtown Flint. I-69, the railroad and the Swartz Creek all parallel into downtown Flint where the freeway intersects I-475 and M-54 (Dort Highway) before exiting the east side of the city.I-69 parallels a line of the Canadian National Railway as it enters the Flint metro area. The freeway intersects Bristol Road near the Bishop International Airport and then crosses I-75/US
I-69 runs eastward out of Flint parallel to the railroad. At Davison, it intersects M-15 before crossing into Lapeer County. In this area, the freeway traverses farmlands in the southern part of the region called The Thumb. It jogs to the north around Lake Nepessing, which is southwest of Lapeer. The freeway continues through farmland to Imlay City, where it meets M-53 before crossing into western St. Clair County. I-69 continues eastward through an interchange with M-19 at Emmett.
Near Wadhams, I-69 curves around to the north to follow part of the Black River. On the east side of the community, the freeway turns back to the southeast as it enters the western edge of the Port Huron suburbs. I-69 turns again to run due eastward to intersect I-94. The two freeways merge in an interchange that also has connections to BL I-69. The freeway curves to the north and back around to the east to cross the Black River. On the eastern bank, I-94/I-69 travels through one more interchange, this one for M-25 and BL I-69/BL I-94. Past the interchange, the freeway crosses through the toll and customs plazas for the twin-span Blue Water Bridge. The I-69 designation officially ends at the international boundary in the middle of the St. Clair River where it connects with Highway 402.
The first major overland transportation corridors in the future state of Michigan were the Indian trails.None of these followed the path of the modern I-69 however. The State Trunkline Highway System was created on May 13, 1913, by an act of the Michigan Legislature; at the time, none of the system's divisions corresponded to the modern I-69 either. In 1919, the Michigan State Highway Department (MSHD) was required to signpost the highway system for the first time, and the state became the second after Wisconsin to do so. At the time, two different highways followed sections of the modern I-69 corridor. The original M-29 ran from the Indiana state line north to Charlotte and turned northeasterly to Lansing. The second highway was M-21 from Flint east to Goodells, a community west of Port Huron; the highway was extended to Port Huron by 1924.
On November 11, 1926, the United States Numbered Highway System was approved by the American Association of State Highway Officials (AASHO), 27 replaced M-29 from the state line northward to Lansing. By the end of the next year, M-78 was extended from Charlotte north and east of Lansing to a junction with M-47 near Pittsburg, north of the modern I-69. The section of M-78 north of Lansing was changed in 1929; the segment from Dewitt to Pittsburg was redesignated M-104, and M-78 was rerouted along a more southerly path through East Lansing to Haslett. By 1936, M-78 was extended from Haslett all the way into Flint to end at M-21. The first span of the Blue Water Bridge opened between Port Huron and Point Edward, Ontario, in 1938.and the new US
The first planning maps from 1947 for what later became the Interstate Highway System did not include a highway along I-69's route; instead a highway further west connecting South Bend, Indiana, with Kalamazoo was included.This alternative highway was maintained on the 1955 plan for the "National System of Interstate and Defense Highways", and numbered I-67 in August 1957. By June 1958, this freeway had been shifted further east and renumbered I-69, connecting Indianapolis, Indiana, with Marshall; no connections north and east to Lansing, Flint or Port Huron were planned as part of the Interstate Highway System. Around the same time, a section of M-146 near Port Huron was converted into an approach freeway for the Blue Water Bridge.
By the middle of 1960, the first section of freeway along M-78 was opened in the Lennon area. 27 south of Lansing be built as an electronic highway under a bid through General Motors; the testing for such a roadway was ultimately done at Ohio State University instead.The next year, the freeway had been extended as far southwest as Durand from the end at Lennon. Also in 1961, the MSHD had proposed that the section of US
By the start of 1962, M-78 was a freeway from Perry at the junction with M-47 all the way to Swartz Creek near Flint.On December 12, 1962, I-96 was completed around the Lansing area, and M-78 was rerouted to follow it. A year later, I-496 was partially opened through the Lansing area, and M-78 was routed to follow it as well; the former route through downtown was redesignated Business M-78 (Bus. M-78). Around the same time, I-94 was extended along the Blue Water Bridge approach freeway.
The first freeway segment of M-21 on the east end was built from Wadhams to Port Huron in 1966. 10/US 23 in Flint. On October 11, 1967, the first segment of I-69/US 27 was scheduled to open between the Indiana state line and Tekonsha. By the end of the year, the freeway extended north to I-94 northwest of Marshall. The MSHD requested additional Interstate Highway mileage in 1968 under the Federal-Aid Highway Act of 1968 including an extension of I-69 from Marshall to Port Huron; this extension was approved as far as I-75/US 23 in Flint on December 13, 1968.The next year, M-78's freeway was extended eastward to I-75/US
A discontinuous section of M-78 freeway east of Flint was completed in 1969. 22 of 1969 named the M-78 freeway through Flint for Louis Chevrolet. In 1970, the I-496 freeway was completed and the Bus. M-78 designation was removed through Lansing. A freeway segment between Flint and Lapeer opened in 1971. M-21 was routed down M-13 to the new freeway where it joined the M-78 designation from M-13 east. The section of M-21 formerly between M-13 and Bus. M-54 was redesignated M-56. The M-78 designation was replaced by I-69 in 1973 after a Temporary I-69 (Temp. I-69) designation was extended northward from Charlotte through Lansing to Perry. On September 4 of that year, I-69's designation was officially extended by Congress to end at I-475 on the east side of Flint; this extension, and all subsequent ones, was of non-chargeable mileage , or segments not financed through the Interstate Highway fund.The same year, I-475 was named the David Dunbar Buick Freeway, after the founder of Buick Motor Company in Flint; the same legislation, House Concurrent Resolution
In 1980, a Flint-area politician wanted to dedicate a highway after the United Auto Workers (UAW). As a result, the David Dunbar Buick Freeway name was moved off I-475 and applied to I-69 in Flint. I-69, and the remainder of that highway was turned back to local control. The I-69 designation was officially extended once more under Congressional legislation on February 10, 1987; this last extension designated I-69 all the way to I-94 in Port Huron to reflect the 1984 openings.The American Association of State Highway and Transportation Officials (AASHTO) approved the extension of the I-69 designation eastward in 1983 so it would terminate at the international boundary at Port Huron; this approval was contingent on construction of the roadway to Interstate Highway standards and other appropriate approvals at the federal government level. The remaining segment of freeway connecting Lapeer with Wadhams opened in 1984 as I-69 and several additional changes were made to the highway system at the same time. M-21 was shortened to Flint and replaced M-56 through the city. The former route of M-21 in Port Huron became BL
Another segment of freeway opened in 1987 in Clinton County between US 127 near DeWitt and Temp. I-69 near Bath. This section was connected to the existing freeway at Perry in 1991. The final segment of I-69 to be completed was located southwest of Lansing. It opened on October 17, 1992, when the ribbon was cut by Governor John Engler. This segment marked the last in the state to complete Michigan's portion of the Interstate Highway System. At the time it was completed, I-69 was concurrent with US 27 from the state line north to the DeWitt area (exit 87) and then concurrent with US 127 to exit 89 before running alone to Port Huron.
A second span of the Blue Water Bridge between Port Huron and Point Edward opened in July 1997. 27 opened on August 31, 1998; US 27 was extended along I-69 about two miles (3.2 km) to the connect to the bypass, and US 127 was simultaneously removed from I-69. The next year, MDOT petitioned AASHTO to decommission the US 27 designation in the state; the change was approved on April 16, 1999. The state waited until 2002 to make the change.The St. Johns Bypass on US
On July 23, 2001, the Michigan Legislature declared that I-69 from exit 105 in Shiawassee County east to exit 135 in Genesee County would be named the Pearl Harbor Memorial Highway. In October 2001, the legislature consolidated the various legislation that created memorial highway designations in the state. Public Act 142 of 2001 extended the merged Chevrolet–Buick Freeway name to all of I-69 in Genesee County, and restored the David Dunbar Buick Freeway name to I-475. The I-69 Recreational Heritage Route (now a Pure Michigan Byway) was created on October 8, 2004, to follow the freeway in Branch and Calhoun counties. The Branch County segment was also dedicated as the Purple Heart Trail on July 17, 2006.
In 2011, construction began to widen I-94/I-69 approaching the Blue Water Bridge,a project completed in 2012. The widening project added dedicated lanes for local traffic and for Blue Water Bridge traffic with a new permanent welcome center opened in 2015, replacing the temporary one near Capac. The lane configuration changes have confused drivers in the area, especially those with outdated GPS devices, a problem first noted as the department was preparing to reopen the freeway in October 2012. As a result, MDOT installed updated signs complete with American and Canadian flags to help prevent drivers from heading to Canada by mistake.
In late 2013, construction began to reconstruct and reconfigure the I-94/I-69 interchange near Port Huron. The project will improve 3.7 miles (6.0 km) of freeway, replace several bridges and ramps and cost $76 million. In June 2014, MDOT closed the ramps from I-69 eastbound to BL I-69 through the interchange until later in the year. The project was completed in September 2015.
|Branch||Kinderhook Township||0.000||0.000||I-69 south – Fort Wayne||Indiana state line|
|2.617||4.212||3||Copeland Road – Kinderhook|
|Ovid–Coldwater township line||9.701||15.612||10||BL I-69 north (Fenn Road) – Coldwater||Southern terminus of BL I-69; signed as Fenn Road only southbound|
|Coldwater||12.607||20.289||13||BL I-69 south / US 12 – Quincy, Coldwater||Northern terminus of BL I-69; signed as US 12 only northbound|
|Coldwater–Girard township line||16.024||25.788||16||Jonesville Road|
|Calhoun||Tekonsha Township||22.546||36.284||23||Tekonsha, Girard||Exit for Old US 27 which follows Main Street in Tekonsha and Marshall Road in Branch County|
|24.627||39.633||25||M-60 – Three Rivers, Jackson|
|Fredonia Township||31.532||50.746||32||M-227 north (F Drive South)||Southern terminus of M-227|
|36|| BL I-94 east (Michigan Avenue) – Marshall |
M-96 west (Michigan Avenue)
|Southern end of BL I-94 concurrency; eastern terminus of M-96|
|38|| I-94 – Detroit, Chicago |
BL I-94 east
|Northern end of BL I-94 concurrency; exit 108 on I-94|
|Convis Township||41.896||67.425||42||N Drive North|
|Eaton||Walton Township||48.229||77.617||48||M-78 west – Bellevue, Olivet||Eastern terminus of M-78|
|50.406||81.121||51||Ainger Road – Olivet|
|Carmel–Eaton township line||56.676||91.211||57||BL I-69 north (Cochran Road) – Charlotte||Southern terminus of BL I-69; signed as Cochran Road only southbound|
|Charlotte||59.549||95.835||60||M-50 – Charlotte, Eaton Rapids|
|61.108||98.344||61||BL I-69 south (Lansing Road) – Charlotte||Northern terminus of BL I-69; signed as Lansing Road only northbound|
|Potterville||66.388||106.841||66||M-100 north – Potterville, Grand Ledge||Southern terminus of M-100|
|Windsor Township||70.270||113.089||70||Lansing Road|
|Delta Charter Township||72.720–|
|72||I-96 east – Detroit||Southern end of I-96 concurrency; concurrency uses I-96 exit numbers; signed as exit 97 southbound|
|74.877||120.503||95||I-496 east – Downtown Lansing||Western terminus of I-496|
|76.341||122.859||93||BL I-69 east / M-43 (Saginaw Highway) – Grand Ledge||Signed as exits 93B (east) and 93A (west); western terminus of BL I-69; signed as M-43 only southbound|
|91||I-96 west – Grand Rapids||Northern end of I-96 concurrency; I-69 changes from north–south to east–west; signed on I-69 westbound as exit 81 with access to and eastbound entrance from Frances Road|
|DeWitt Township||83.081||133.706||84||Airport Road|
|84.820||136.505||85||DeWitt||Exit located at DeWitt Road|
|86.315||138.911||87||Old US 27|
|89||US 127 – East Lansing, Lansing, Jackson, Clare||Signed as exits 89A (south) and 89B (north); exit 82 on US 127|
|Bath Township||91.603||147.421||92||Webster Road – Bath|
|93.929||151.164||94||BL I-69 west – East Lansing, Haslett, Okemos||Eastern terminus of BL I-69; East Lansing signed westbound only, Haslett and Okemos signed eastbound only|
|Shiawassee||Woodhull Township||97.319||156.620||98||Woodbury Road – Laingsburg|
|Perry Township||104.613||168.358||105||M-52 – Owosso, Perry|
|Shiawassee Township||112.256||180.659||113||Grand River Road – Bancroft|
|Vernon Township||117.408||188.950||118||M-71 west – Durand, Corunna||Eastern terminus of M-71|
|Shiawassee–Genesee county line||Venice–Clayton township line||122.213||196.683||123||M-13 north – Lennon, Saginaw||Southern terminus of M-13|
|Genesee||Swartz Creek||127.186||204.686||128||Morrish Road|
|Flint||130.649||210.259||131||Bristol Road – Bishop International Airport||Former M-121|
|133||I-75 / US 23 – Saginaw, Ann Arbor, Detroit||Exit 117 on I-75/US 23|
|135.556||218.156||136||Saginaw Street – Downtown||Eastbound exit, entrance via 9th Street; westbound exit, entrance via 8th Street|
|137||I-475 – Saginaw, Detroit||Exit 6 on I-475|
|137.085||220.617||138||M-54 (Dort Highway)|
|Davison Township||142.216||228.874||143||Irish Road|
|144.258||232.161||145||M-15 – Clarkston, Davison|
|Lapeer||Elba Township||148.232||238.556||149||Elba Road|
|Lapeer Township||152.386||245.241||153||Lake Nepessing Road|
|Lapeer||154.456||248.573||155||M-24 – Lapeer, Pontiac|
|Lapeer Township||158.730||255.451||159||Wilder Road|
|Attica Township||162.736||261.898||163||Lake Pleasant Road|
|Imlay City||167.815||270.072||168||M-53 – Imlay City, Almont|
|St. Clair||Mussey Township||175.231||282.007||176||Capac Road – Capac|
|Riley Township||179.647||289.114||180||Riley Center Road|
|183.695||295.628||184||M-19 – Sandusky, Richmond|
|Wales Township||188.125||302.758||189||Wales Center Road|
|Kimball Township||193.383||311.220||194||Taylor Road|
|195.676||314.910||196||Wadhams Road – Wadhams|
|Port Huron Township||198.472–|
|198||I-94 west – Detroit||Western end of I-94 concurrency; exit 271 on I-94|
|198.448||319.371||199||BL I-69 east – Downtown Port Huron||Eastbound exit from I-69 and I-94 (exit 271); westbound entrance to I-69 and I-94; I-69 begins using I-94's mileposts for exit numbers; western terminus of BL I-69|
|200.745||323.068||274||Water Street, Lapeer Avenue – Port Huron||Signed as 274A (Lapeer Avenue) and 274B (Water Street) eastbound; indirect access to Lapeer Avenue via Lapeer Connector (former M-146); no direct eastbound entrance to Blue Water Bridge|
|Port Huron||201.301||323.963||275||BL I-69 west / BL I-94 west / M-25 north (Pine Grove Avenue) / LHCT – Downtown Port Huron||Eastbound last exit before Canada; eastern terminus of BL I-69 and BL I-94; southern terminus of M-25; eastbound signage omits mention of BL I-69/BL I-94|
|201.689||324.587||Toll Plaza (eastbound)|
U.S. Customs (westbound)
|St. Clair River||201.223–|
|Blue Water Bridge (tolled)|
|Highway 402 east / LHCT – Sarnia, London||Continuation into Ontario|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
In Michigan, I-69 currently has four business loops. These highways, each designated Business Loop I-69 (BL I-69), provide access from the main freeway through the downtown districts of adjacent cities. They follow former routings used by I-69's predecessor highways (US 27, M-78 and M-21) as well connecting roads. The cities served by these loops are: Coldwater, Charlotte, Lansing, and Port Huron.
M-78 is a state trunkline highway in the US state of Michigan. The western terminus is the intersection with M-66 north of Battle Creek in Pennfield Township. The roadway runs 10.744 miles (17.291 km) through rural farmland and the community of Bellevue as it approaches its eastern terminus at an interchange with Interstate 69 (I-69) near Olivet. The highway is used by between 3,100 and 5,300 vehicles on a daily basis.
M-21 is an east–west state trunkline highway in the US state of Michigan connecting the cities of Grand Rapids and Flint. The highway passes through rural farming country and several small towns along its course through the Lower Peninsula. Following the course of a handful of rivers, M-21 also connects some of the state's freeways like Interstate 96 (I-96), US Highway 127 (US 127) and I-75. The highway is used by between 1,700 and 36,000 vehicles daily.
Interstate 475 (I-475) is a north–south Interstate Highway in the US state of Michigan. I-475 is a 16.9-mile (27.2 km) bypass route that serves the downtown area of Flint while its parent, I-75, passes through the west side of the city. I-475 starts southwest of Grand Blanc and runs through suburbs of Flint before passing through downtown. There it intersects I-69 and crosses the Flint River. The freeway turns westerly to connect back to I-75 north of Flint near Mount Morris.
M-13 is a 73.339-mile (118.028 km) north–south state trunkline highway that runs through the Saginaw Bay region of the US state of Michigan. It runs from Interstate 69 (I-69) south of Lennon to US Highway 23 (US 23) near Standish. The southern section of the trunkline runs along a pair of county lines in a rural area dominated by farm fields. The highway directly connects the downtown areas of both Saginaw and Bay City. North of the latter city, the Lake Huron Circle Tour follows M-13 along the Saginaw Bay.
M-59 is an east–west state trunkline highway that crosses the northern part of Metropolitan Detroit in the US state of Michigan. It runs between Howell at Interstate 96 (I-96) and I-94 on the Chesterfield–Harrison township line near the Selfridge Air National Guard Base. While primarily a multi-lane surface highway, it is a full freeway from just east of downtown Pontiac near Opdyke Road to just east of the Mound Road/Merrill Road exit in Utica. The various surface highway segments are named either Highland Road, Huron Street or Hall Road, with the latter known as an area for shopping and dining. The rural sections west of Pontiac pass through Oakland County lake country crossing through two state recreational areas.
M-53 is a north–south state trunkline highway in the US state of Michigan that connects Detroit to The Thumb region. The highway starts in Detroit at a connection with M-3 and ends in Port Austin, Michigan at M-25. In between, the trunkline passes through the northern suburbs of Metro Detroit, connects to freeways like Interstate 69 (I-69) and provides access to rural farmland. In Macomb County, M-53 follows the Christopher Columbus Freeway, while the remainder of the highway is known as Van Dyke Avenue in the metro area or Van Dyke Road elsewhere. The highway has also been named the Earle Memorial Highway for one of the pioneers of the Good Roads Movement and Michigan's highway system.
US Highway 27 (US 27) is a part of the US Highway System that now runs from Miami, Florida, to Fort Wayne, Indiana. In the US state of Michigan, it was a north–south state trunkline highway that entered the state south of Kinderhook and ended south of Grayling. Its route consisted of a freeway concurrency with Interstate 69 (I-69) from the state line north to the Lansing area before it followed its own freeway facility northward to St. Johns. From there north to Ithaca, US 27 was an expressway before continuing as a freeway to a terminus south of Grayling.
M-19 is a north–south state trunkline highway in the US state of Michigan. The trunkline begins northeast of Detroit at a junction with Interstate 94 (I-94) near New Haven and runs northward to a junction with M-142 just east of Bad Axe in The Thumb region of the Lower Peninsula. The highway runs through mostly rural and agricultural areas, connecting several small communities.
M-146 was a state trunkline highway in the US state of Michigan that initially served as a bypass for traffic going around Port Huron and as a short cut for traffic between U.S. Highway 25 and M-21. Later it connected to the Blue Water Bridge before it was truncated to its final form. Segments of M-146 still exist today as state highways as part of Interstate 94 (I-94) and I-69 and the Lapeer Connector.
Interstate 94 (I-94) is a part of the Interstate Highway System that runs from Billings, Montana, to the Lower Peninsula of the US state of Michigan. In Michigan, it is a state trunkline highway that enters the state south of New Buffalo and runs eastward through several metropolitan areas in the southern section of the state. The highway serves Benton Harbor–St. Joseph near Lake Michigan before turning inland toward Kalamazoo and Battle Creek on the west side of the peninsula. Heading farther east, I-94 passes through rural areas in the middle of the southern Lower Peninsula, crossing I-69 in the process. I-94 then runs through Jackson, Ann Arbor, and portions of Metro Detroit, connecting Michigan's largest city to its main airport. Past the east side of Detroit, the Interstate angles northeasterly through farmlands in The Thumb to Port Huron, where the designation terminates on the Blue Water Bridge at the Canadian border.
US Highway 23 (US 23) is a north–south United States Numbered Highway that runs from Jacksonville, Florida, to Mackinaw City, Michigan. In the US state of Michigan, it is a major, 362-mile-long (583 km), north–south state trunkline highway that runs through the Lower Peninsula. The trunkline is a freeway from the Michigan–Ohio state line near Lambertville to the city of Standish, and it follows the Lake Huron shoreline from there to its northern terminus. Serving the cities of Ann Arbor and Flint, US 23 acts as a freeway bypass of the Metro Detroit area. Overall, the highway runs through rural areas of the state dominated by farm fields or woodlands; some segments are urban in character in the Ann Arbor, Flint and Tri-Cities areas. The section from Flint north to Standish also carries Interstate 75 (I-75) along a concurrency that includes a segment that carries almost 70,000 vehicles on a daily basis.
There are currently eight business routes of Interstate 94 (I-94) in the US state of Michigan. These business routes connect I-94 to the downtown business districts of neighboring cities. Seven of the eight routes are business loops which bear the Business Loop I-94 designation while one is a business spur that bears the Business Spur I-94. These loops are former routings of I-94's two predecessors in Michigan: US Highway 12 (US 12) or US 25. The westernmost BL I-94 runs through the twin cities of Benton Harbor and St. Joseph along the former routing of US 12 and US 31/US 33 that now includes a section of the Lake Michigan Circle Tour in the state. The loops in Kalamazoo, Battle Creek, Marshall, Albion, and Jackson were also formerly segments of US 12 which were later designated as separate version of Business US Highway 12 through their respective cities before becoming BL I-94s in 1960. The BL I-94 in Kalamazoo was converted into BS I-94 in 2019. The route of the business loop through Ann Arbor was previously US 12 and then later M-14 before receiving its current moniker. The BL I-94 through Port Huron was previously US 25 and then Business US Highway 25.
There are currently four business routes of Interstate 69 (I-69) in the US state of Michigan. Designated Business Loop Interstate 69, they are all former routings of I-69's predecessor highways, US Highway 27 (US 27), M-78 or M-21, in whole or in part. The BL I-69 in Coldwater and the one in Charlotte were both parts of US 27 before the freeway bypassed those two cities in 1967 and the early 1970s, respectively. The BL I-69 through Lansing and East Lansing was previously part of M-78 and Temporary I-69 until it was redesignated in 1987. Before 1984, the loop in Port Huron was originally part of M-21 and was initially a business spur numbered Business Spur Interstate 69. It was later redesignated when it was extended to run concurrently with that city's BL I-94 which was originally part of I-94's predecessor, US 25. Each business loop follows streets through each city's downtown areas and connects to I-69 on both ends, giving traffic a route through the downtown and back to the freeway.
There have been nine business routes for Interstate 75 in the US state of Michigan. Numbered either Business Loop Interstate 75 or Business Spur Interstate 75 depending if they are a full business loop or a business spur, these highways are former routings of I-75's predecessor highways in the state. They were designated as I-75 was completed through the various areas of Michigan. The business loop in Pontiac runs through that city's downtown along a section of Woodward Avenue and a segment of roadway formerly used by M-24. The former Saginaw business loop was once a part of US Highway 23 (US 23), as was most of the original Bay City business loop. The roadways that make up the business loops in West Branch and Roscommon were previously part of M-76, I-75's predecessor through that part of the state. In Northern Michigan, the Grayling and Gaylord BL I-75s were part of US 27, and the two business routes in St. Ignace and Sault Ste. Marie in the Upper Peninsula of Michigan were part of US 2. A tenth business route, a loop through Indian River has been proposed. Each of the business loops connects to I-75 on both ends and runs through their respective cities' downtown areas. The two business spurs only connect to I-75 on one end and run into the appropriate downtown.
US Highway 10 (US 10) is a part of the United States Numbered Highway System that runs from West Fargo, North Dakota, to the Lower Peninsula of the US state of Michigan. The highway enters Michigan on the SS Badger, which crosses Lake Michigan between Manitowoc, Wisconsin, and Ludington. As the highway crosses the state, it is a two-lane undivided highway between Ludington and Farwell and a freeway from Farwell east to the highway's terminus in Bay City. US 10 runs concurrently with US 127 in the Clare area along a section of freeway that includes a welcome center in the median. Outside of the Clare and Midland areas, US 10 runs through rural areas of Western and Central Michigan in a section of the Manistee National Forest as well as farm fields.
US Highway 127 (US 127) is a part of the United States Numbered Highway System that runs from Chattanooga, Tennessee, to the Lower Peninsula of Michigan. In Michigan, it is a state trunkline highway that runs for 214.17 miles (344.67 km), entering from Ohio south of Hudson and ending at a partial interchange with Interstate 75 (I-75) south of Grayling. US 127 is the primary route connecting Lansing and Central Michigan to Northern Michigan and the Mackinac Bridge. From the south side of Jackson northerly, it is mostly a four-lane freeway. A notable exception is a 16-mile (26 km) stretch from north of St. Johns to just south of Ithaca, where the highway is built as an expressway and speed limits are lower. South of Jackson to the state line, the trunkline is a two-lane, undivided highway with access from adjacent properties.
US Highway 25 (US 25) was a part of the United States Numbered Highway System in the state of Michigan that ran from the Ohio state line near Toledo and ended at the tip of The Thumb in Port Austin. The general routing of this state trunkline highway took it northeasterly from the state line through Monroe and Detroit to Port Huron. Along this southern half, it followed undivided highways and ran concurrently along two freeways, Interstate 75 (I-75) and I-94. Near the foot of the Blue Water Bridge in Port Huron, US 25 turned north and northwesterly along the Lake Huron shoreline to Port Austin.
There have been five different business routes of US Highway 23 in the state of Michigan. These business routes were designated along former sections of US Highway 23 (US 23) to provide signed access from the main highway to the downtowns of cities bypassed by new routings of US 23. Two are still extant, connecting through downtown Ann Arbor and Rogers City. Three others have been decommissioned. The former Business US 23 in Fenton was split in half during the 1970s and later completely turned back to local control in 2006. The former business loops through Saginaw and Bay City were renumbered as business loops of Interstate 75 in the 1960s.
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