U.S. Route 12 in Michigan

Route map:
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Source: Wikipedia, the free encyclopedia.
This article is about the section of U.S. Route 12 in Michigan. For the entire route, see U.S. Route 12.

Lake Michigan Circle Tour
US 12 Heritage Trail
Major junctions
West end US 12 near New Buffalo
Major intersections
East endMichigan Avenue and Cass Avenue in Detroit
Location
CountryUnited States
StateMichigan
CountiesBerrien, Cass, St. Joseph, Branch, Hillsdale, Lenawee, Washtenaw, Wayne
Highway system
←
M-151

US Highway 12 (US 12) is an east–west

divided highway
routing on Michigan Avenue into Detroit, where it terminates at an intersection with Cass Avenue.

When US 12 was designated in Michigan on November 11, 1926, along with the other original US Highways, it ran along a more northerly course. It originally replaced sections of the original

business loops, both of which were renumbered Business US Highway 12 (Bus. US 12) in 1962. In 2010, the Niles business loop was decommissioned
, but the one in Ypsilanti remains. One section of the former US 112 was renumbered US Highway 112S (US 112S) for a few years in the 1930s.

Route description

Between the state line near

divided highway and then a boulevard into the Detroit area.[4] The entire length of the highway east of Coldwater is listed on the National Highway System,[5] a network of roads important to the US's economy, defense, and mobility.[6]

Southwest Michigan

US 12 enters the state of Michigan southwest of New Buffalo near the town of Michiana. The highway runs a bit inland and parallel to the Lake Michigan shore on Red Arrow Highway past the community of Grand Beach before turning eastward away from the lake on the north side of New Buffalo. US 12 intersects I-94 less than a mile (1.6 km) east of this turn and continues due east along Pulaski Highway through rural farmland. The highway is the main east–west street as it crosses through Three Oaks in southern Berrien County. East of Galien, the highway dips southward around Dayton Lake before passing south of Buchanan. The highway continues eastward, intersecting US 31 (St. Joseph Valley Parkway) near Niles. East of that freeway, US 12 expands into an expressway as the Niles Bypass. This bypass intersects M-139, crosses the St. Joseph River, and intersects M-51 on the south side of Niles. US 12 turns northeasterly along the bypass east of downtown and then departs to the southeast at an interchange with Main Street and M-60 just across the county line with Cass County.[3][4]

Continuing through southern Cass County, US 12 runs roughly parallel to the state line. It turns northeasterly to run into

Union and turns to the northeast. US 12 intersects the southern end of M-40 before crossing into St. Joseph County at the eastern crossing of the St. Joseph River.[3][4]

On the eastern side of the river, US 12 enters

Sauk River. US 12 passes through the town of Quincy before crossing into Hillsdale County.[3][4]

Southeast Michigan

East of the Hillsdale County line, US 12 runs easterly into

Somerset, the highway crosses into northern Lenawee County.[3][4]

Immediately east of the Lenawee County line, US 12 intersects

Cambridge Junction, it passes Michigan International Speedway and crosses the River Raisin next to a junction with M-50. East of the racetrack, the highway meanders through an area dotted by several smaller lakes until it intersects M-124 at Hayes State Park. Continuing as Michigan Avenue, US 12 angles northeasterly from the park until it hits the Lenawee–Washtenaw county line. The highway follows the line for several miles before reentering Lenawee County. It continues through an intersection with M-52 and into Clinton before turning northeasterly and fully crossing into Washtenaw County.[3][4]

In Washtenaw County, US 12 passes through

Bus. US 12 at Huron Street south of downtown. The freeway continues around the south side of the city and rounds the north end of Ford Lake. It is bounded by residential neighborhoods, and it crosses the Huron River on the eastern side of Ypsilanti. Near the Willow Run industrial complex and airport, US 12 separates from I-94 and turns northeasterly along an expressway on the north side of the airport. There are three interchanges, including one for the eastern end of M-17 before US 12 crosses into Wayne County and intersects the eastern end of Bus. US 12.[4][7]

East into Detroit

Once US 12 intersects the eastern end of its business loop, it returns to Michigan Avenue for the remainder of its routing in the state. The roadway is a

Canton Township and parallel to the Lower River Rouge. US 12 intersects I-275 on the eastern side of the township before crossing into Wayne. The highway is bounded by a mix of industrial and commercial properties in suburban Metro Detroit. In downtown Wayne, the two sides of Michigan Avenue split apart, surrounding the central business district of the city and separated by two to three city blocks. East of this split, Michigan Avenue crosses a section of Westland before entering Inkster.[4][7]

Historic Michigan Central Station along Michigan Avenue

In

Woodward Avenue.[4][7]

History

Before 1926

Map
Map of the pre-statehood Indian trails

The first major overland transportation corridors in the future state of Michigan were the Indian trails.[9] Two of these trails are relevant to US 12. The St. Joseph Trail ran between the Benton Harbor–St. Joseph area and Detroit by way of what is now Kalamazoo, Battle Creek, Jackson, and Ann Arbor. The second, the Sauk Trail, ran further south through what is now Niles, and Coldwater to the Ann Arbor area.[10]

The Town of Detroit

Washington DC and intended to make Detroit the "Paris of the West".[15]

The southern of these two Indian trails later became the Chicago Road. Father Gabriel Richard, the first priest to serve in the U.S. House of Representatives, petitioned Congress to fund a highway between Detroit and Chicago in March 1824. A year later, the road was established in federal law, and it was surveyed by the end of 1825. Construction started in 1829, and the road was finished across Michigan in 1833.[16] The northern Indian trail was established as an unnamed territorial road (later called Territorial Road) in 1829.[17]

The

Michigan State Highway Department (MSHD)[b] signposted the highway system for the first time,[21] and the future US 12 corridor was assigned two numbers. From the state line north through Benton Harbor to Watervliet, it carried the original M-11 designation, and, from Watervliet eastward, it was the original M-17. From Dearborn into Detroit, the original M-10 ran concurrently along M-17.[22]

Union–Ypsilanti
Length130.223 mi[1] (209.574 km)
Existedc. July 1, 1919[22]–November 11, 1926[23]

The future US 112 along the Chicago Road had two different numbers in the original highway plan. Between New Buffalo and Niles, the highway was numbered

Union to Ypsilanti, it was M-23. East of Ypsilanti, the corridor was part of M-17 and M-10. In November 1926, these two highway corridors were renumbered as part of the United States Numbered Highway System.[23]

Original US Highway: 1926–1962

On November 11, 1926, the United States Numbered Highway System was approved by the

Sawyer and Stevensville,[27] and downtown Stevensville was bypassed in 1928.[28][29] Additional work to fully bypass Stevensville was finished in 1929.[30][31]

In 1931, the original routing of US 12 along a section of Michigan Avenue between Kalamazoo and

Leoni and Grass Lake to the north.[34][35] This new bypass was extended eastward from Sylvan to bypass Chelsea to the south the following year, filling a gap in "super highway"[d] segments between Jackson and Ann Arbor.[36][37] The last routing change in the 1930s was the opening of Stadium Drive in Kalamazoo, after which US 12 was rerouted to follow it west of downtown.[38][39]

In 1940, a southern bypass of Battle Creek opened along Columbia Avenue, and the former routing through downtown on Michigan Avenue became a Bus. US 12.[40][41] In late 1951 or early 1952, a northerly bypass of Jackson opened, and the former route through downtown on Michigan Avenue became another Bus. US 12.[42][43] By the next year, the western half of the Jackson bypass opened, including a bypass of Parma.[44][45] In 1954, a new bypass of Kalamazoo and Galesburg opened; US 12 was rerouted to follow the new highway while M-96 replaced part of the old route and the US 12A in the area.[46][47]

Tiger Stadium, former home of the Detroit Tigers at the corner of Michigan and Trumbull in Detroit (now demolished)

In 1956, several changes were made to US 12's routing. A southern bypass of Ann Arbor and Ypsilanti was converted to a freeway. US 12 was rerouted to follow the bypass, supplanting the M-17 and Bypass US 112 (Byp. US 112) designations used previously on the bypass. US 112 was also rerouted, and it ran concurrently with US 12 along the bypass. The former route of US 12 along Plymouth Road from Ann Arbor east to Detroit was renumbered M-14, and the M-112 designation on the Willow Run and Detroit Industrial expressways was replaced by US 12. At the same time as these changes were made, the Jackson bypass was upgraded to a full freeway.[48][49] By the middle of 1958, the Kalamazoo bypass was converted to a full freeway.[50][51]

Previously delayed so that the designations could be finalized,[52] the MSHD started numbering its Interstate Highways in 1959, adding I-94 to the sections of US 12 freeway.[53] Later that year, additional segments of I-94/US 12 were opened, starting with a 10-mile (16 km) section from Hartford to Coloma, then another from Paw Paw to Kalamazoo which connected with a segment between Galesburg to Battle Creek. The overall 45-mile (72 km) section from Paw Paw to Battle Creek was dedicated on December 7, 1959.[54] By the middle of 1960, US 12 followed the I-94 freeway from Coloma to Watervliet and from Paw Paw to the east side of Jackson. It was also routed along the freeway from the west side of Ann Arbor into Detroit, where it followed the southern end of the Lodge Freeway.[55] By the middle of 1961, the Watervliet–Paw Paw and Jackson–Ann Arbor freeway gaps were completed, and the freeway was extended westward to Stevensville.[56] By the end of the year, I-94/US 12 extended all the way to New Buffalo.[57] In January 1962, the state made the biggest rerouting change of all to US 12: the designation was removed from the I-94 freeway from New Buffalo to Detroit and shifted to completely replace US 112.[58][59]

US Highway 112: 1926–1962

US Highway 112 marker

US Highway 112

LocationNew Buffalo–Detroit
Length205.507 mi[1] (330.731 km)
ExistedNovember 11, 1926[2]–January 1962[58][59]

Union
Length17.376 mi[1] (27.964 km)
Existed1931[32][33]–1935[60][61]

In 1925, US 112 was originally proposed to run from

US 110.[62] When it was initially designated in November 1926, US 112 made a sharp turn to the southwest to connect to US 20 in Elkhart, Indiana.[23] In 1931, a new trunkline highway was designated between M-60 at Niles and US 112 at Union. This highway was numbered M-151.[32][33] In 1933, the section of US 112 from Union to Elkhart was renumbered US 112S.[63][64] M-151 and US 112S each lasted until 1935 when US 112 was extended to replace M-151. US 112 was also extended to run concurrently with M-60 to New Buffalo, and US 112S was renumbered M-205.[60][61]

In 1936, the section of US 112 along Michigan Avenue east of Ypsilanti was expanded into a "super highway".[34][35] In 1955, a realignment of US 127 in southern Jackson County removed a short concurrency with US 112 from Somerset Center in Hillsdale County and the current intersection in northwestern Lenawee County.[65][66]

On December 1, 1956, the highway department opened the first 6.6 miles (10.6 km) of a new four-lane divided highway around the south side of Niles; the final 1.6 miles (2.6 km) of the bypass opened early the next year.

Mottville and White Pigeon.[51][55] In January 1962, the US 112 designation was eliminated when US 12 was shifted off the I-94 freeway to replace US 112.[58][59] The state's rationale for the removal of the US 112 designation was the long-standing AASHO recommendation against US Highway designations extant in only one state.[70]

After 1962

After US 12 replaced US 112, the Bus. US 12 routes were renumbered as BL I-94, and the two Bus. US 112s were renumbered to Bus. US 12.[57] In 1966, the state truncated M-60 and removed it as a concurrent designation along US 12 between New Buffalo and Niles.[71][72]

In October 2000, the state proposed changing jurisdiction of several highways near Campus Martius Park in Detroit,[73] and US 12 was shortened by four city blocks the next year to end along Michigan Avenue at Griswold Street.[74][75] This would be shortened again in 2005 to Michigan and Cass avenues.[76][77]

In April 2017, MDOT announced the reconstruction of US 12 east of Ypsilanti, which would reduce the route from a boulevard to a singular road along the existing eastbound lanes. This project would also eliminate an interchange with Wiard Road and allow the adjacent American Center for Mobility to use the westbound lanes as part of a facility to test automated vehicles. The project was projected to be completed that November.[78][79]

Memorial highway and byway names

Iron Brigade Memorial Highway sign, Pittsfield Township

The roads that have carried US 12 in Michigan have been given a number of memorial highway names. In 1922, after the publication of Main Street by Sinclair Lewis, that street name took on a pejorative connotation. The newspaper in Jackson advocated that the main road from Detroit to Chicago which formed the main street through many communities in southern Michigan should be given a new name. It was already labeled the Michigan–Detroit–Chicago Highway on travel maps of the time, so the paper suggested that the roadway should be renamed to create the longest street in the country. Both Chicago and Detroit had streets named Michigan Avenue, so that is what the newspaper suggested for a new name. Albion was the first community to change the name of its street followed by Jackson and Marshall in 1924, Battle Creek in 1928, and Kalamazoo in 1929.[17]

In 1952, US 12 was dedicated to the 32nd Infantry Division. The division used a red arrow as its insignia to symbolize how they pierced the German Hindenburg Line during World War I and Japanese defenses during World War II. The soldiers who composed the division were drawn from the Michigan and Wisconsin national guards. After other proposals failed, US 12 was named the Red Arrow Highway on August 30, 1952, and dedicated on March 22, 1953. Jurisdiction of most of the roadways that composed US 12 at that time has passed to local governments as I-94 was built, but the highway still bears that name in Berrien[80] and Van Buren counties.[81]

Count Casimir Pulaski was a Polish-born noble and soldier who fought on the side of the Americans during the Revolutionary War. He was appointed a brigadier general on the recommendations of George Washington and later became known as the "Father of the American Cavalry". He was severely wounded during the siege of Savannah and died while being treated on the brigantine Wasp. The route of US 112 was designated the Pulaski Memorial Highway by Public Act 11 of 1953 and formally dedicated in Detroit on October 4, 1953. The segment of what is now US 12 in Berrien County still bears this name.[82]

US 12 has also been designated as the Iron Brigade Memorial Highway, a designation which it also has in Indiana,[83] Illinois,[84] and Wisconsin.[85] The name honors the 24th Michigan Infantry Regiment, part of the Iron Brigade from the American Civil War. The regiment lost more troops than any other on the Union side during the war and provided the military escort for Abraham Lincoln's funeral in Springfield, Illinois. The unit traveled along the Chicago Road to join the war effort. The highway was dedicated in twin ceremonies in New Buffalo on October 9, 1994, and in Detroit on November 11, 1995, to the Iron Brigade.[86]

In 1986,

Michigan Historic Heritage Route. The segment through Clinton was given the same status in October 2002.[16] On June 9, 2004, the full length of US 12 was dedicated as the US 12 Heritage Trail.[89] In December 2014, this became a Pure Michigan Byway when Governor Rick Snyder signed legislation renaming the Michigan Heritage Route System to the Pure Michigan Byway System.[90]

Major intersections

CountyLocationmi[1]kmExitDestinationsNotes
LMCT west – Michigan City
Indiana state line
5.758–
5.868		9.267–
9.444
Detroit, Chicago
Eastern end of LMCT concurrency; exit 4 on I-94
Bertrand Township26.260–
26.304		42.261–
42.332		 US 31 (St. Joseph Valley Parkway) – South Bend, HollandExit 3 on US 31
27.21343.795
Bus. US 12
; western end of Niles Bypass; southern terminus of M-139
Niles Township
29.8548.04— M-51 – Niles, South BendFormer interchange, converted to at-grade intersection in 2024
CassMilton Township31.41350.554—
 M-60 east (Detroit Road) – Three Rivers
East Main Street		Interchange; US 12 departs via exit ramps, M-60 continues easterly past eastern end of Niles Bypass as divided highway; western terminus of M-60
Edwardsburg39.90164.214 M-62 – Cassopolis
Mason Township46.99575.631Old M-205Formerly M-205
Mason–Porter township line50.99482.067
 M-217 south (Michiana Parkway) – Elkhart		Northern terminus of M-217
Porter Township55.47389.275
 M-40 north – Marcellus		Southern terminus of M-40
Mottville
57.85793.112
 M-103 south – Elkhart		Northern terminus of M-103
White Pigeon62.742100.973 US 131 – Kalamazoo, Middlebury
Lagrange
Western end of M-66 concurrency; to Indiana Toll Road
75.419121.375
 M-66 north (Nottawa Street) – Battle Creek		Eastern end of M-66 concurrency
BranchColdwater Township98.516158.546
 M-86 west (Colon Road) – Three Rivers		Eastern terminus of M-86
BL I-69
south		Western end of BL I-69 concurrency
102.203–
102.227		164.480–
164.518
BL I-69
south		Eastern end of concurrency BL I-69; exit 13 on I-69
HillsdaleAllen113.064181.959
 M-49 north (Allen Road) – Litchfield		Western end of M-49 concurrency
Allen Township
113.589182.804
 M-49 south (Edon Road) – Reading		Eastern end of M-49 concurrency
Jonesville118.539190.770
 M-99 south (Carleton Road) – Hillsdale		Western end of M-99 concurrency
118.879191.317
 M-99 north (Homer Road) – Albion		Eastern end of M-99 concurrency
LenaweeWoodstock Township136.114219.054
 US 127 (Meridian Road) to US 223 – Jackson, Hudson
Cambridge Township143.423230.817 M-50 – Jackson, Monroe
147.669237.650
W.J. Hayes State Park
Eastern terminus of M-124
Lenawee–Washtenaw county line
 No major junctions
LenaweeFranklin Township154.540248.708 M-52 – Chelsea, Adrian
Pittsfield Township
174.258–
174.278		280.441–
280.473		 US 23 – Ann Arbor, ToledoExit 34 on US 23
Ypsilanti Township
176.400–
176.419		283.888–
283.919		181
 I-94 west – Chicago		Western end of I-94 concurrency
Bus. US 12 east (Huron Street) – Ypsilanti
Detroit
Eastern end of I-94 concurrency; eastbound exit and westbound entrance
182.150293.142
 M-17 west – Ypsilanti		Eastern terminus of M-17; former westbound exit and eastbound entrance, replaced 2022 by Michigan left[91]
182.527293.749Willow Run Airport – Plant Truck AccessFormer Y-interchange with Wiard Road; replaced 2017–2018 by signalized intersection
183.323295.030Willow Run Airport – Plant TrafficFormer Y-interchange
Ypsilanti–Van Buren
township line		183.761295.735—Ecorse Road –Willow Run Airport East and North AccessEastbound exit and westbound entrance
Bus. US 12
west (Michigan Avenue)		Channelized intersection, formerly a westbound exit and eastbound entrance
Canton Township
189.537–
189.564		305.030–
305.074		— I-275 – Flint, ToledoExit 22 on I-275
Dearborn198.478–
198.487		319.419–
319.434		— US 24 (Telegraph Road)Interchange
200.353322.437Western end of expressway
201.506–
201.512		324.292–
324.302		— M-39 (Southfield Freeway)Exit 6 on M-39
202.605326.061—Greenfield RoadInterchange
202.846326.449Eastern end of expressway
204.481–
204.497		329.080–
329.106		 I-94 (Edsel Ford Freeway)Exit 210 on I-94
Detroit
204.718329.462
 M-153 west (Ford Road)		Eastern terminus of M-153
208.380–
208.413		335.355–
335.408		 I-75 (Fisher Freeway)Exit 47 on I-75
210.077338.086Cass AvenueEastern terminus of US 12; Michigan Avenue continues to
Woodward Avenue
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Related routes

Kalamazoo alternate route

Comstock
Length3.767 mi[1] (6.062 km)
Existed1931[32][33]–1954[46][47]

US Highway 12A (US 12A) was an

Comstock, where it terminated at an intersection with M-96. The highway was formed in 1931 when US 12 was rerouted in the area.[32][33] In 1954, the designation was decommissioned when M-96 was extended to Kalamazoo on the south side of the Kalamazoo River along King Highway.[46][47]

Major intersections
The entire highway was in Kalamazoo County.

Locationmi[1]kmDestinationsNotes
Kalamazoo0.0000.000
 US 12 / M-43 west – Kalamazoo		Western end of M-43 concurrency
0.1960.315
 M-43 east – Lansing		Eastern end of M-43 concurrency
Comstock
3.7676.062
 M-96 east – Battle Creek
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Niles business loop

Business plate 1948.svg

Business US Highway 112 marker

Business US Highway 112

LocationNiles
Length5.505 mi[1] (8.859 km)
Existed1956[68][69]–January 1962[58]

Business plate.svg

Business US Highway 12 marker

Business US Highway 12

LocationNiles
Length5.327 mi[1] (8.573 km)
ExistedJanuary 1962[58]–March 5, 2010[92]

Business US Highway 12 (Bus. US 12) was a

Bus. M-60 (Oak Street). Bus. US 12/M-51 continued south along 11th Street to the corner of US 12 (Pulaski Highway) and M-51 (South 11th Street) where the business loop terminated.[93][94]

The trunkline was first designated in 1956 as a business route of US 112. At that time, US 112 and

Bus. US 31 was added a year later when the signage was updated in the area.[97][98] In 1998, US 33 was removed from Michigan completely. At this time, M-51 was extended over former US 33 and replaced part of the Bus. US 31 designation in Niles.[99] On March 5, 2010, the segment of Bus. US 12 between Bus. US 31 and M-51 was turned over to local control.[92] In April 2010 the Bus. US 12 designation was retired when an extended M-139 replaced it from the local control section southwestward prior to maps and signage being changed.[100] The concurrent segment along M-51 became M-51 only.[101]

Major intersections
The entire highway was in St. Joseph County.

Locationmi[1]kmDestinationsNotes
Bertrand Township0.0000.000 US 12 – New Buffalo, Coldwater
Niles2.9004.667
 M-139 north		Southern terminus of M-139
3.1455.061
 M-51 north – Dowagiac		Northern end of M-51 concurrency
3.5495.712
Bus. M-60
east		Western terminus of Bus. M-60
Niles Township
5.3278.573 US 12 – New Buffalo, Coldwater

 M-51 south – South Bend		Southern end of M-52 concurrency; interchange on US 12
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Ypsilanti business loop

By-pass plate 1948.svg

Bypass US Highway 112 marker

Bypass US Highway 112

LocationYpsilanti
Length8.023 mi[1] (12.912 km)
Existedc. 1942.[102][103]–1956[48][49]

Business plate 1948.svg

Business US Highway 112 marker

Business US Highway 112

LocationYpsilanti
Length8.020 mi[1] (12.907 km)
Existed1956[48][49]–January 1962[58]

Business plate.svg

Business US Highway 12 marker

Business US Highway 12

LocationYpsilanti
Length8.020 mi[1] (12.907 km)
ExistedJanuary 1962[58]–present

Business US Highway 12 (Bus. US 12) is a business route running in Ypsilanti. The loop starts at exit 183 on I-94/US 12 south of downtown Ypsilanti and runs northward along the one-way pairing of Huron Street (northbound) and Hamilton Street (southbound). At the intersection with Michigan Avenue in downtown, the two directions reunite and turn eastward, merging onto M-17 in the process. Michigan Avenue crosses the Huron River and continues due east until an intersection at Prospect Street where it turns northeasterly. M-17 separates from Bus. US 12 at Ecorse Road, and Michigan Avenue continues through commercial areas, exiting the city of Ypsilanti. Once Bus. US 12 crosses from Washtenaw County into Wayne County, it expands into a boulevard with Michigan left turns. Just north of the Willow Run industrial complex, Bus. US 12 terminates where US 12 merges onto Michigan Avenue.[104][105]

Michigan Avenue facing west, downtown Ypsilanti

In 1942 or 1943, Ypsilanti was bypassed by a Byp. US 112. US 112 continued to run along its routing in Ypsilanti.[102][103] The first business loop in Ypsilanti was created in 1956 when US 112 was realigned to bypass downtown along the former Byp. US 112. The former route through downtown was then numbered Bus. US 112.[48][49] The current designation was changed to Bus. US 12 in 1962 when US 12 replaced US 112.[58]

Major intersections

CountyLocationmi[1]kmDestinationsNotes
Detroit
Exit 183 on I-94/US 12
1.1041.777
 M-17 west		Western end of M-17 concurrency
1.7742.855
 M-17 east		Eastern end of M-17 concurrency
Detroit
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Suffixed route

Union, MI to Elkhart, IN
Length8.68 mi[1][106] (13.97 km)
Existed1933[63][64]–1935[60][61]

US Highway 112S (US 112S) was a spur route of US 112 in the mid-1930s. Originally, US 112 turned southward at

Union and ran to US 20 in Elkhart, Indiana. In 1933, this section of highway was renumbered US 112S,[63][64] before US 112 was relocated to go through Michigan's southwesternmost counties in 1935. At the same time, US 112S was renumbered M-205,[60][61] a designation it would hold until it was transferred to local control on October 10, 2002,[107] decommissioning the trunkline.[108][109]

See also

  •  
    Michigan Highways portal

Notes

  1. ^ Detroit was incorporated as a town in 1802 by the government of the Northwest Territory before incorporation and reincorporation as a city by the Michigan Territory in 1806 and 1815.[11]
  2. ^ The Michigan State Highway Department was reorganized into the Michigan Department of State Highways and Transportation on August 23, 1973.[19] The name was shortened to its current form in 1978.[20]
  3. ^ AASHO was renamed the American Association of State Highway and Transportation Officials (AASHTO) on November 13, 1973.[24]
  4. ^ Michigan State Highway Department maps of the time defined a "super highway" as one with "three lanes and over" on the map key.

References

  1. ^ a b c d e f g h i j k l m n o Michigan Department of Transportation (2021). Next Generation PR Finder (Map). Michigan Department of Transportation. Retrieved October 11, 2021.
  2. ^
    OCLC 63377558
    .
  3. ^
    OCLC 42778335, 900162490
    .
  4. ^ a b c d e f g h i j Google (May 4, 2015). "Overview Map of US Highway 12 in Michigan" (Map). Google Maps. Google. Retrieved May 4, 2015.
  5. ^ Michigan Department of Transportation (April 23, 2006). National Highway System, Michigan (PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation. Archived from the original (PDF) on October 6, 2014. Retrieved October 7, 2008.
  6. ^ Natzke, Stefan; Neathery, Mike & Adderley, Kevin (June 26, 2013). "What is the National Highway System?". National Highway System. Federal Highway Administration. Retrieved July 1, 2013.
  7. ^
    OCLC 42778335, 900162490
    .
  8. OCLC 45227386
    .
  9. OCLC 698029175
    .
  10. OCLC 23314983
    .
  11. OCLC 2823136
    – via University of Michigan Digital Library Text Collections.
  12. OCLC 435640179
    .
  13. ^ Baulch, Vivian M. (June 13, 1999). "Woodward Avenue, Detroit's Grand Old 'Main Street'". The Detroit News. Archived from the original on August 21, 2012. Retrieved June 6, 2012.
  14. OCLC 57425393
    .
  15. OCLC 137348716. Archived
    from the original on January 2, 2015. Retrieved July 16, 2012.
  16. ^ a b Barnett (2004), pp. 50–1.
  17. ^ a b Barnett (2004), pp. 154–5.
  18. OCLC 44724558
    – via Google Books.
  19. OCLC 8169232. Retrieved January 18, 2021 – via Wikisource
    .
  20. ^ Kulsea & Shawver (1980), pp. 30–31.
  21. OCLC 9975013
    .
  22. ^
    OCLC 15607244
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Further reading

External links

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US Highway 12
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