List of U.S. Highways in Michigan

TheUS Highways in Michiganare the segments of the nationalUnited States Numbered Highway System[4]that are owned and maintained by the state ofMichigan,[5]totaling 2,300 miles (3,701 km).[3]The longest of these isUS Highway 23(US 23) at around 362 miles (583 km). On a national level, the standards and numbering for the system are handled by theAmerican Association of State Highway and Transportation Officials(AASHTO), while the highways in Michigan are maintained by theMichigan Department of Transportation(MDOT).

United States Numbered Highways of the State Trunkline Highway System
US Highway 102 marker
US Highway 16 marker
US Highway 23 marker
Highway markersfrom different years for former US Highway 102 (1926), former US Highway 16 (1948), and current US Highway 23 (1973)
Map
US Highways in Michigan highlighted in red
System information
Maintained byMDOT
Length2,299.653 mi[3](3,700.933 km)
Plus 159.621 mi[3](256.885 km) of business routes
FormedNovember 11, 1926(1926-11-11)[1][2]
Highway names
US HighwaysUS Highway nn (US nn)
Special Routes:
  • Alternate US Highway nn (US nnA)
  • Business US Highway nn (Bus. US nn)
  • Bypass US Highway nn (Byp. US nn)
  • Truck US Highway nn (Truck US nn)
System links

The original highways were approved on November 11, 1926, by AASHTO including 14 mainline highways. A handful of these original highway designations no longer run within Michigan, and a few numbers have been added since the 1930s. Since 1999, there have been 13 mainline highways, and with the creation of abusiness routeforConstantine,there are a total of 30special routesin the state. Several highways have been converted tofreeways,some of which are nowInterstate Highwaysand no longer part of the US Highway System. These freeway conversions started in the 1940s and 1950s and continued through to the turn of the 21st century.

Description

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MDOT is the agency responsible for the day-to-day maintenance and operations of theState Trunkline Highway System,which includes the U.S. Highways in Michigan. The numbering for these highways is coordinated throughAASHTO,[6]an organization composed of the various state departments of transportation in the United States.[7]Under the scheme finalized in 1926, two-digit US Highways are numbered in a grid; east–west highways have even numbers while north–south routes have odd numbers. The lowest numbers are in the east and the north. The east–west highways in Michigan number in the single digits up to the low 20s. The north–south highways range from the low 20s into the 40s. There are also three three-digit highways numbered in the 100s and one in the 200s as branches of related two-digit highways.[8]

In Michigan, the US Highway System covers about 2,300 miles (3,701 km) of mainline highways and another 160 miles (257 km) ofspecial routes.[3]There are 13 mainline highways and 30 special routes in total, including onebusiness routethat isunsigned.[8][9]Two of the mainline highways in the Upper Peninsula exit the state and re-enter, resulting in two discontinuous segments of highway for each in Michigan.[10]The longest US Highway in the state isUS Highway 23(US 23) at just over 362 miles (583 km) spanning from theOhiostate line north to theStraits of Mackinacin the Lower Peninsula, while the shortest is the 2.3-mile (3.7 km) segment ofUS 8south ofNorwayin Dickinson County. Special routes range in length from about1+14miles (2.0 km) forBusiness US 2(Bus. US 2) inIronwoodto 10 miles (16 km) forBus. US 131inKalamazoo.[3]

History

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US Highway number assignments on November 11, 1926, in Michigan

The US Highway System was approved on November 11, 1926.[1]At the time, 14 mainline highways were designated in Michigan.[2]Just two years later on November 12, 1928,US 102was renumbered as part of an extendedUS 141,and the former designation wasdecommissioned.[11]Since then, another four designations were added in the state during the 1930s. One of these,US 112Swas asuffixed, directional branchof the US 112 mainline; it was removed a few years[12]after being designated in 1931.[13]Around the same time period, the firstalternate routeswere designated, numbered with an "A" suffix.[a]

During World War II, theMichigan State Highway Department(MSHD)[b]built the Willow Run Expressway to carry workers fromDetroitto the defense plants atWillow Run Airport.[19]This expressway was numbered as a part of US 112 initially.[20]During the 1950s, additional highways were converted to freeways before the coming of theInterstate Highway Systemin 1957. The first highway renumbered as an Interstate wasUS 24Ain the southeastern corner of the state, which became part ofInterstate 75(I-75) in 1959.[21]

Major numbering changes started in the 1960s as Michigan retired or rerouted its US Highways with the completion of Interstates.US 12replaced US 112 in 1962 when theI-94designation supplanted most of the original US 12.[22]Later that year,US 16was decommissioned in favor ofI-96.[23]This trend continued into the 1970s whenUS 25was decommissioned as redundant to sections of I-75 and I-94.[24]

Not all freeway conversions of existing US Highways resulted in the removal of US Highway numbers. In 1968, the state submitted a request for additional Interstate Highway mileage to the federal government, including a proposal to convertUS 131.[25]This specific project was not approved although the state continued its own efforts to convert the highway, including various segments opened in the 1970s[26]and 1980s.[27]Other highways converted to freeways includedUS 10,US 23,US 27,US 31andUS 127.[8]

At the end of the 1970s, MDOT took part in aFederal Highway Administration-backed initiative called the Positive Guidance Demonstration Project, and the two agencies audited signage practices in the vicinity of the I-96/M-37 and I-296/US 131 interchange inWalker,north ofGrand Rapids.MDOT determined that usage of the I-296 designation was "a potential source of confusion for motorists".[28]Following this program, the Reflective Systems Unit at MDOT reviewed the state of two- and three-way concurrencies along the highway system in Michigan. They approached the department's Trunkline Numbering Committee and the district traffic and safety engineers on October 19, 1982, for proposals to reduce or eliminate the various overlapping designations to "avoid driver confusion and save funds".[29]The initial discussion report included the various remaining overlaps between Interstate and US Highways.[29]When the unit released its final recommendations on March 17, 1983, various changes were proposed.[30]In 1983,US 2was truncated, removing the overlap with I-75,[31]and in 1986, US 10 was similarly shortened to remove an overlap with I-75.[32]US 33was all but eliminated in the state in 1986 as well, eliminating its overlap with US 31.[33]Over a decade later, two highway designations were completely removed from the state in 1990s when US 33 and US 27 were truncated to end in Indiana in 1997[34]and 1999,[35]respectively. The latter also removed an overlap withI-69.[36]

Additional freeway sections opened around the turn of the 21st century. TheSt. JohnsBypass along then-US 27 opened on August 31, 1998;[37]and bypasses ofCadillacandMantonon US 131 opened in 2001[38]and 2003.[39]A 9.5-mile (15.3 km) freeway segment of US 31 north from Berrien Springs to Napier Avenue also opened in 2003.[40][41]Plans still had support to convert the expressway segment of US 127 betweenIthacaand St. Johns into a full freeway as of 2009.[42]MDOT completed a re-evaluation of the environmental studies for the conversion, but future activities were limited toright-of-wayacquisition without any commitments for actual construction.[43]Plans are also still in place to complete the rest of the US 31 freeway near Benton Harbor,[44]but funding has not been available.[45]

Mainline highways

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Number Length (mi)[3] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 2 109.177 175.703 US 2atIronwood US 2/US 141atMastodon Townshipsouth ofCrystal Falls 01926-11-111926[2] current Western segment
US 2 195.974 315.390 US 2/US 141atBreitung TownshipnearIron Mountain I-75andBL I-75inSt. Ignace 01926-11-111926[2] current Eastern segment
US 8 2.322 3.737 US 8 atNorway Township US 2inNorway 01926-11-111926[2] current Shortest US Highway in Michigan
US 10 139.656 224.755 Car ferry docks inLudington I-75/US 23andBS I-75/M-25inMonitor TownshipnearBay City 01926-11-111926[2] current Connects toUS 10 in Wisconsinvia theSSBadgercar ferry
US 12 210.077 338.086 US 12atNew Buffalo Township Michigan and Cass avenues inDetroit 01926-11-111926[2] current Michigan Avenue
US 16 210.643 338.997 Car ferry docks inMuskegon US 10,US 12,US 25andUS 112inDetroit 01926-11-111926[2] 01962-02-011962[23] Replaced byI-96
US 23 362.152 582.827 US 23/US 223atWhiteford TownshipnearTemperance I-75inMackinaw City 01926-11-111926[2] current Longest US Highway in Michigan
US 24 79.828 128.471 US 24atBedford TownshipnearErie I-75inSpringfield TownshipnearClarkston 01926-11-111926[2] current Telegraph Road
US 25 190.953 307.309 US 25atErie Township M-25andM-53inPort Austin 01926-11-111926[2] 01973-01-011973[24] Replaced byM-125,I-75,M-3,I-94,and M-25[24]
US 27 218.195 351.151 I-69/US 27atKinderhook Township I-75inBeaver Creek TownshipnearGrayling 01926-11-111926[2] 01999-04-161999[35] Replaced byI-69and US 127; signage removed in 2002[46]
US 31 355.179 571.605 US 31atBertrand TownshipnearNiles I-75inMackinaw TownshipnearMackinaw City 01926-11-111926[2] current
US 33 2.835 4.562 US 33atMilton Township US 12in Milton Township south ofNiles 01938-01-011938[47] 01997-04-251997[34] Replaced byM-51;signage removed in 1998[48]
US 41 278.769 448.635 US 41atMenominee Cul-de-sac atFort Wilkins State ParknearCopper Harbor 01926-11-111926[2] current
US 45 54.759 88.126 US 45/WIS 32atWatersmeet Township Ontonagon and River streets inOntonagon 01935-01-01c. 1935[49] current
US 102 44.094 70.962 US 2inCrystal Falls US 41/M-28inCovington Township 01926-11-111926[2] 01928-11-121928[11] Replaced byUS 141
US 112 205.507 330.731 US 12inNew Buffalo Township US 10,US 12,US 16andUS 25inDetroit 01926-11-111926[2] 01962-01-011962[22] Replaced by US 12 whenI-94replaced US 12
US 112S 1.709 2.750 US 112S atMason Township US 112in Mason Township nearAdamsville 01933-01-011933[13] 01935-01-011935[12] Replaced byM-205,now a county road
US 127 212.168 341.451 US 127at theWrightMedinatownship line nearWaldron I-75inBeaver Creek TownshipnearGrayling 01926-11-111926[2] current
US 131 269.313 433.417 US 131 atMottville TownshipnearWhite Pigeon US 31inPetoskey 01926-11-111926[2] current
US 141 7.892 12.701 US 141 atQuinnesec US 2/US 141 inBreitung TownshipnearIron Mountain 01928-11-121928[11] current Southern segment
US 141 43.602 70.171 US 2/US 141 atMastodon Townshipsouth ofCrystal Falls US 41/M-28inCovington Township 01928-11-121928[11] current Northern segment
US 223 45.695 73.539 US 23/US 223 atWhiteford TownshipnearTemperance US 127inWoodstock TownshipnearSomerset 01930-01-011930[50] current
  • Former

Special routes

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Number Length (mi)[3] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes

Bus. US 2
1.270 2.044 Wisconsinstate line atIronwood US 2in Ironwood 01942-08-011942[51] current Business spur; previously included a connection across the state line intoHurley, Wisconsin[52]

Bus. US 10
2.095 3.372 US 10inReed City US 10 in Reed City 01960-01-01c. 1960[53] current

Bus. US 10
5.002 8.050 US 127/US 10on theGrantSheridantownship line US 10 inWise Township 01975-01-011975[54] current ServesClare

Bus. US 10
7.200 11.587 US 10inMidland US 10 andM-20in Midland 01960-01-011960[55] current Western end is inMidland Countyand eastern end is inBay County[3]

Bus. US 10
14.767 23.765 US 10inMount Morris Township US 10 inGrand Blanc Township 01941-01-011941[56] 01962-01-011962[57] ServedFlint;replaced byBus. M-54,also since returned to local control

Bus. US 10
6.925 11.145 US 10inWaterford Township US 10 inBloomfield Township 01961-01-011961[58] 01986-01-011986[59] ServedPontiac;replaced byBus. US 24
US 12A 3.767 6.062 US 12inKalamazoo US 12 inComstock 01931-01-011931[15] 01954-01-011954[60] Replaced byM-96

Bus. US 12
11.955 19.240 I-94/US 12inTexas Township I-94/US 12 inComstock Township 01959-01-011959[61] 01961-01-011961[62] ServedKalamazoo;replaced byBL I-94

Bus. US 12
9.678 15.575 I-94/US 12inBattle Creek Township I-94/US 12 inEmmett Township 01940-01-011940[63] 01961-01-011961[64] ServedBattle Creek;replaced byBL I-94

Bus. US 12
3.716 5.980 I-94/US 12inMarshall Township I-94/US 12 inMarengo Township 01960-01-011960[65] 01961-01-011961[66] ServedMarshall;replaced byBL I-94

Bus. US 12
4.520 7.274 I-94/US 12inAlbion I-94/US 14 inParma Township 01960-01-011960[65] 01961-01-011961[66] Replaced byBL I-94

Bus. US 12
10.274 16.534 I-94/US 12inBlackman Township I-94/US 12 inLeoni Township 01951-01-01c. 1951[67] 01960-01-011960[68] ServedJackson;replaced byBL I-94

Bus. US 12
5.327 8.573 US 12inBertrand Township US 12 andM-51inNiles Township 01962-01-011962[22] 02010-03-052010[69] ServedNiles;replaced byM-51,M-139

Bus. US 12
8.020 12.907 I-94/US 12inYpsilanti US 12 inVan Buren Township 01962-01-011962[22] current Replaced Bus. US 112

Byp. US 16
20.197 32.504 US 16inWalker Township US 16 inCascade Township 01942-01-011942[70] 01953-01-011953[71] BypassedGrand Rapids;replaced by the US 16 mainline, now part ofM-11

Bus. US 16
17.102 27.523 US 16inWalker US 16 inCascade Township 01953-01-011953[71] 01962-01-011962[72] ServedGrand Rapids;returned to local control
US 16A 3.863 6.217 US 16inFarmington Hills US 16 in Farmington Hills 01933-01-011933[13] 01956-01-011956[73] BypassedFarmington;replaced by the US 16 mainline, now part ofM-5

Bus. US 16
4.129 6.645 US 16inFarmington Hills US 16 in Farmington Hills 01956-01-011956[73] 01961-01-011961[74] ServedFarmington;replaced byBL I-96,now unsigned

Bus. US 23
5.781 9.304 BL I-94/US 23andM-17inPittsfield Township US 23/M-14inAnn Arbor Township 01962-11-281962[75] current ServesAnn Arbor

Bus. US 23
3.009 4.843 US 23inFenton US 23 in Fenton 01958-01-01c. 1958[76] 02006-01-012006[77] Southern 1.723 mi (2.773 km) unsigned after 1975;[78]now under city control

Bus. US 23
8.006 12.884 US 10/US 23inBridgeport Township US 23/M-81inSaginaw 01953-01-011953[79] 01961-01-011961[80] Replaced byBL I-75

Bus. US 23
2.714 4.368 US 23inBay City US 23/M-47andM-20in Bay City 01941-01-011941[81] 01961-01-011961[82] Replaced byBL I-75/M-25andM-84

Bus. US 23
4.074 6.556 US 23inBelknap Township US 23 inRogers City 01942-01-281942[83] current
US 24A 33.783 54.368 Ohio state line south ofErie US 25inTaylor 01945-01-011945[84] 01959-01-011959[21] Replaced byI-75

Bus. US 24
7.121 11.460 US 24inBloomfield Township US 24 inWaterford Township 01986-01-011986[59] current ServesPontiac;formerlyBus. US 10
US 25A 5.111 8.225 Ohio state line inErie Township US 25in Erie Township 01937-01-011937[85] 01945-01-011945[84] Replaced by US 24A and laterI-75
US 25A 2.481 3.993 M-51inFort Gratiot Township US 25in Fort Gratiot Township 01940-01-011940[86] 01963-01-011963[87] Replaced byUS 25and laterM-25

Bus. US 25
8.382 13.490 I-94/US 25inKimball Township US 25 inFort Gratiot Township 01963-01-011963[87] 01973-01-011973[88] ServedMarysvilleandPort Huron;replaced byM-25and laterBL I-94

Bus. US 27
2.986 4.806 I-69/US 27andBL I-94inMarshall Township I-94in Marshall Township 01967-01-011967[89] 01972-01-011972[90] ServedMarshall;sections not concurrent with BL I-94 turned over to local control

Bus. US 27
4.891 7.871 I-69/US 27on theCarmelEatontownship line I-69/US 27 inCharlotte 01961-01-011961[91] 01974-01-011974[92] Replaced byBL I-69

Truck US 27
1.529 2.461 US 27/M-78inLansing US 27/M-78 in Lansing 01936-01-011936[93] 01950-01-011950[94] Replaced byUS 27

Bus. US 27
4.725 7.604 BL I-96inLansing I-69/US 27inDeWitt Township 01984-01-011984[95] 02002-01-012002[96] Replaced by unsignedBus. US 127in Lansing

Bus. US 27
8.808 14.175 US 27inOlive Township US 27 inBingham Township 01998-01-011998[97] 02002-01-012002[36] ServedSt. Johns;replaced byBus. US 127

Bus. US 27
3.745 6.027 US 27on theIthacaNorth Star Townshipline US 27 inEmerson Township 01961-01-011961[98] 02002-01-012002[36] Replaced byBus. US 127
US 27A 5.255 8.457 US 27east ofAlma US 27 andM-46west ofSt. Louis 01929-01-011929[14] 01961-01-011961[98] Replaced byBus. US 27

Bus. US 27
5.631 9.062 US 27on theEmersonBethanytownship line US 27 inPine River Township 01961-01-011961[98] 02002-01-012002[36] ServedAlma;replacedUS 27Aand replaced byBus. US 127

Bus. US 27
4.711 7.582 US 27on thePine RiverBethanytownship line US 27 in Pine River Township 01961-01-011961[98] 02002-01-012002[36] ServedSt. Louis;replaced byBus. US 127

Bus. US 27
5.688 9.154 US 127inUnion Township US 127 in Union Township 01961-01-011961[98] 02002-01-012002[36] ServedMt. Pleasant;replaced byBus. US 127

Bus. US 27
3.374 5.430 US 127inVernon Township US 127/US 10inGrant Township 01961-01-011961[98] 02002-01-012002[36] ServedClare;replaced byBus. US 127

Bus. US 27
6.903 11.109 US 127andM-61inHayes Township US 127 in Hayes Township 01961-01-011961[98] 02002-01-012002[36] ServedHarrison;replaced byBus. US 127

Bus. US 31
3.587 5.773 Bus. US 12inNiles Old US 31 inNiles Township 01987-01-011987[99] 02010-01-012010[100] Replaced byM-139

Bus. US 31
3.992 6.425 US 31inSouth Haven Township US 31 inCasco Township 01942-01-01c. 1942[101] 01963-01-011963[102] ServedSouth Haven;replaced byBL I-196

Bus. US 31
4.120 6.630 BL I-196/US 31inHolland US 31 and BL I-196 inHolland Township 01954-01-011954[103] 02004-01-012004[104] Returned to city control
US 31A 4.763 7.665 US 16andUS 31inMuskegon Heights US 31 inMuskegon 01932-01-011932[16] 01941-01-01c. 1941[105] Replaced byBus. US 31

Bus. US 31
9.870 15.884 I-96andUS 31inNorton Shores US 31 inNorth Muskegon 01941-01-01c. 1941[105] current ServesMuskegon;replacedUS 31A

Bus. US 31
4.680 7.532 US 31inWhitehall Township US 31 inMontague Township 01964-06-301964[106] current ServesWhitehallandMontague

Bus. US 31
2.138 3.441 US 31inHart Township Johnson and State streets inHart 01987-01-011987[107] current Business spur

Bus. US 31
7.151 11.508 US 31inWeare Township US 31 on thePentwater–Weare township line 01955-08-031955[108] 02023-05-042023[109] ServedPentwater

Bus. US 31
3.172 5.105 US 31inPere Marquette Township US 10inLudington 02005-01-012005[110] current Business spur

Bus. US 41
2.343 3.771 US 41/M-28inMarquette US 41/M-28 in Marquette 01963-11-231963[111] 02005-11-052005[112] Returned to city control

Bus. US 41
4.873 7.842 US 41/M-28inIshpeming US 41/M-28 inNegaunee 01937-01-011937[113] 01958-01-011958[114] Replaced byBus. M-28

Bus. US 41
4.256 6.849 US 41inBaraga US 41 inBaraga Township 01940-01-011940[115] 01942-01-011942[116] Returned to local control

Bus. US 112
5.434 8.745 US 112inBertrand Township US 112 andM-60inMilton Township 01956-01-01c. 1956[117] 01962-01-011962[22] ServedNiles;replaced byBus. US 12

Byp. US 112
8.023 12.912 US 112andM-17inPittsfield Township US 112 inVan Buren Township 01942-01-01c. 1942[118] 01956-01-011956[119] BypassedYpsilanti;replaced byI-94

Bus. US 112
8.020 12.907 US 112inYpsilanti US 112 inVan Buren Township 01956-01-011956[119] 01962-01-011962[22] Replaced byBus. US 12

Bus. US 127
6.443 10.369 US 127andM-50inSummit Township I-94,US 127 and M-50 inBlackman Township 01959-01-01c. 1959[120] current SevesJackson

Bus. US 127
2.369 3.813 US 127inMason US 127 andM-36in Mason 01946-01-01c. 1946[121] 01964-01-011964[122] Sections not concurrent with M-36 turned over to local control
Bus. US 127 4.725 7.604 BL I-96inLansing I-69inDeWitt Township 02002-01-012002[96] current Unsigned; replacedBus. US 27

Bus. US 127
8.808 14.175 US 127inOlive Township US 127 inBingham Township 02002-01-012002[36] current ServesSt. Johns;replacedBus. US 27

Bus. US 127
3.745 6.027 US 127on theIthacaNorth Star Townshipline US 127 inEmerson Township 02002-01-012002[36] current ReplacedBus. US 27

Bus. US 127
5.631 9.062 US 127on theEmersonBethanytownship line US 127 inPine River Township 02002-01-012002[36] current ServesAlma;replacedBus. US 27

Bus. US 127
4.711 7.582 US 127on thePine RiverBethanytownship line US 127 in Pine River Township 02002-01-012002[36] current ServesSt. Louis;replacedBus. US 27

Bus. US 127
5.688 9.154 US 127inUnion Township US 127 in Union Township 02002-01-012002[36] current ServesMt. Pleasant;replacedBus. US 27

Bus. US 127
3.374 5.430 US 127inVernon Township US 127/US 10inGrant Township 02002-01-012002[36] current ServesClare;replacedBus. US 27

Bus. US 127
6.903 11.109 US 127andM-61inHayes Township US 127 in Hayes Township 02002-01-012002[36] current ServesHarrison;replacedBus. US 27

Bus. US 131
3.656 5.884 US 131inConstantine Township US 131 in Constantine Township 02013-01-012013[123] current ServesConstantine

Bus. US 131
2.982 4.799 US 131/M-60inThree Rivers US 131 in Three Rivers 01953-01-011953[124] current

Bus. US 131
4.198 6.756 Westnedge Avenue and Park Street inKalamazoo Township US 131in Kalamazoo Township 01964-01-011964[125] current ServesKalamazoo

Byp. US 131
14.253 22.938 US 131inGrand Rapids US 131 inPlainfield Township 01945-01-011945[126] 01953-01-011953[71] Replaced byM-11,M-37andM-44

Bus. US 131
2.419 3.893 US 131inGrand Rapids I-296/US 131 in Grand Rapids 01953-01-011953[71] 02017-01-012017[127] Returned to local control

Bus. US 131
6.860 11.040 US 131/M-20inBig Rapids Township US 131 andB-96in Big Rapids Township 01983-01-011983[128] current ServesBig Rapids

Bus. US 131
5.597 9.007 US 131/M-55inClam Lake Township US 131 inHaring Township 02001-01-012001[38] current ServesCadillac

Bus. US 131
5.667 9.120 US 131andM-42inCedar Creek Township US 131 inLiberty Township 02003-01-012003[39] current ServesManton

Bus. US 223
3.751 6.037 US 223andM-52inAdrian US 223 in Adrian 01956-01-01c. 1956[129] current
  • Former

See also

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Notes

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  1. ^US 27Awas created in 1929,[14]US 12Ain 1931,[15]US 31Ain 1932,[16]andUS 16Ain 1933.[13]
  2. ^The Michigan State Highway Department was reorganized into the Michigan Department of State Highways and Transportation on August 23, 1973,[17]and the name was later shortened to its current form in 1978.[18]

References

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Footnotes

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  1. ^abMcNichol (2006),p. 74.
  2. ^abcdefghijklmnopqrBPR & AASHO (1926).
  3. ^abcdefghMichigan Department of Transportation(2021).Next Generation PR Finder(Map). Michigan Department of Transportation.RetrievedOctober 11,2021.
  4. ^Swift (2011),p. 5.
  5. ^Hamilton (2007),p. 8.
  6. ^American Association of State Highway and Transportation Officials(n.d.)."Standing Committee on Highways (SCOH) Overview".American Association of State Highway and Transportation Officials. Archived fromthe originalon December 14, 2015.RetrievedJanuary 5,2016.
  7. ^McNichol (2006),pp. 57, 121.
  8. ^abcRand McNally (2013),pp. 50–1.
  9. ^MDOT (2015b),Lansing inset.
  10. ^MDOT (2015a),§§ D4–D5.
  11. ^abcdExecutive Committee (November 12, 1928)."Minutes of Executive Committee"(PDF)(Report). Washington, DC: American Association of State Highway Officials. p. 6.RetrievedApril 13,2022– via Wikimedia Commons.
  12. ^abMSHD & Rand McNally (1935a);MSHD & Rand McNally (1935b).
  13. ^abcdMSHD & Rand McNally (1933a);MSHD & Rand McNally (1933b).
  14. ^abMSHD (1929);MSHD & H.M. Gousha (1930).
  15. ^abMSHD & Rand McNally (1931a);MSHD & Rand McNally (1931b).
  16. ^abMSHD & Rand McNally (1932),Muskegon inset;MSHD & Rand McNally (1933a),Muskegon inset.
  17. ^Kulsea & Shawver (1980),p.27.
  18. ^Kulsea & Shawver (1980),pp.30–31.
  19. ^Kulsea & Shawver (1980),pp.17–18.
  20. ^MSHD (1945),§ M12.
  21. ^ab"Interstate 75 Road Markers Are Unveiled".The Herald-Press.St. Joseph, Michigan.Associated Press.October 13, 1959. p. 3.OCLC10117184.RetrievedJuly 11,2018– viaNewspapers.
  22. ^abcdef"Area Road Signs To Be Changed".The News-Palladium.Benton Harbor, Michigan. Associated Press. January 9, 1962. § 2, p. 5.RetrievedJuly 13,2018– via Newspapers.
  23. ^abMSHD (1962),§§ K8–M14;MSHD (1963),§§ K8–M14.
  24. ^abc"Will Eliminate US 25 Markings".Ironwood Daily Globe.Associated Press.p. 11.OCLC10890811.RetrievedJuly 13,2018– via Newspapers.
  25. ^"Highway Additions Requested By State".The Owosso Argus-Press.Associated Press. November 14, 1968. p. 7.OCLC9802802.RetrievedDecember 5,2010– viaGoogle News.
  26. ^"News Capsules: Freeway".Ludington Daily News.November 2, 1976. p. 1.OCLC27033604.RetrievedJuly 13,2018– via Newspapers.
  27. ^Hoogterp, Ed (January 18, 1981). "US 131 Won't Hit the Straits".The Grand Rapids Press.pp. 1F, 2F.OCLC9975013.
  28. ^Conner, Robert E (April 11, 1979). "Removing I-296 Signs in Grand Rapids". Letter to Donald E. Trull. Washington, DC: Federal Highway Administration.
  29. ^abKanillopoolos, John J. (October 19, 1982)."Dual and Triple Routing on State Trunklines".Letter to Trunkline Numbering Committee. Lansing: Michigan Department of Transportation.RetrievedJune 3,2019– viaWikisource.
  30. ^Kanillopoolos, John J. (March 17, 1983)."Dual and Triple Routing on State Trunklines".Letter to Trunkline Numbering Committee. Lansing: Michigan Department of Transportation.RetrievedJune 3,2019– via Wikisource.
  31. ^MDOT (1983),§§ C10–C11;MDOT (1984),§§ C10–C11.
  32. ^MDOT (1986),§§ J11–M13;MDOT (1987),§§ J11–M13.
  33. ^Special Committee on U.S. Route Numbering (June 9, 1986)."Route Numbering Committee Agenda"(Report). Washington, DC: American Association of State Highway and Transportation Officials.RetrievedApril 9,2015– viaWikisource.
  34. ^abSpecial Committee on U.S. Route Numbering (April 27, 1997)."Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways"(PDF)(Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived fromthe original(PDF)on October 16, 2017.RetrievedApril 9,2015.
  35. ^abSpecial Committee on U.S. Route Numbering (April 17, 1999)."Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways"(PDF)(Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived fromthe original(PDF)on October 16, 2017.RetrievedMay 24,2008.
  36. ^abcdefghijklmnoMDOT (2002a),§§ G10–L11;MDOT (2003a),§§ G10–L11.
  37. ^Truscott, John (August 31, 1998)."Governor Engler Opens US 27 Freeway"(Press release). Michigan Department of Transportation. Archived fromthe originalon June 2, 2008.RetrievedMay 24,2008.
  38. ^abBornheimer, Hank (October 27, 2001). "Temporary Recreation Trail Ready for Traffic—You Can Walk, Run, Skate or Bike the Cadillac Bypass—until Tuesday".The Grand Rapids Press.p. A1.OCLC9975013.
  39. ^abMDOT (2003a),§ H9;MDOT (2004a),§ H9.
  40. ^Aiken, Scott (August 23, 2003)."Better Late than Never: US 31 Freeway Finally Reaches Twin Cities".The Herald-Palladium.St. Joseph, Michigan. pp. 1A,6A.OCLC34793533.RetrievedJuly 13,2018– via Newspapers.
  41. ^Martin, Julie A. (August 27, 2003)."US 31 in Berrien County Opens Today!"(Press release). Michigan Department of Transportation. Archived fromthe originalon December 25, 2011.RetrievedMarch 26,2013.
  42. ^Rook, Christine (July 12, 2009)."Finishing US 127 Still Has Support".Lansing State Journal.pp. 1A,4A.ISSN0274-9742.OCLC6678181.RetrievedJuly 13,2018– via Newspapers.
  43. ^Michigan Department of Transportation (n.d.)."Overview".US 127 St. Johns to Ithaca Freeway.Michigan Department of Transportation.RetrievedJune 15,2016.
  44. ^Aiken, Scott (October 20, 2013)."When, Oh When, Will 31 Be Done? MDOT Says Linking the Freeway to I-94 East of Benton Harbor Is Years Away".The Herald-Palladium.Benton Harbor, Michigan.Archivedfrom the original on October 24, 2013.RetrievedNovember 13,2013.
  45. ^Haroldson, Tom (September 4, 2013)."MDOT Officials Concerned Funding Issues Can Delay, Kill Needed Projects".Kalamazoo Gazette.Archivedfrom the original on July 14, 2014.RetrievedSeptember 5,2013.
  46. ^Ranzenberger, Mark (April 27, 2008). "US 127 Signs Getting Updated".The Morning Sun.Mount Pleasant, Michigan. pp. 1A, 6A.OCLC22378715.
  47. ^"Route 33 Boosters to Meet at Harrisonburg, Va".Logan Daily News.October 8, 1940. p. 6.OCLC71196386.RetrievedNovember 5,2018– via Newspapers.
  48. ^"Portion of US 33 Is Now Indiana 933: Name Changes Along Lincoln Way, North to State Line".South Bend Tribune.April 18, 1998. p. A6.OCLC8793233.RetrievedMarch 25,2019– via Newspapers.
  49. ^MSHD & Rand McNally (1934);MSHD & Rand McNally (1935a).
  50. ^ODOH (1930);ODOH (1931),§§ E4–B14.
  51. ^"US 2 Business Route Through Ironwood".The Bessemer Herald.August 14, 1942. p. 7.RetrievedNovember 9,2015– via Newspapers.
  52. ^WisDOT (2001),§ E2;WisDOT (2003),§ E2.
  53. ^MSHD (1958),§ I9;MSHD (1960),§ I9.
  54. ^MDSHT (1975),§ I10;MDSHT (1976),6 I10.
  55. ^MSHD (1960),§ J11;MSHD (1961),§ J11.
  56. ^MSHD & Rand McNally (1941a),§ K12;MSHD & Rand McNally (1941b),§ K12.
  57. ^MSHD (1962),§ K12;MSHD (1963),§ K12.
  58. ^MSHD (1960),Pontiac inset;MSHD (1961),Detroit Metropolitan Area inset, §§ A5–B6.
  59. ^abMDOT (1986),Detroit and Vicinity inset, §§ A6–B7;MDOT (1987),Detroit and Vicinity inset, §§ A6–B7.
  60. ^MSHD (1954a),Kalamazoo inset;MSHD (1954b),Kalamazoo inset.
  61. ^"Marshall and Area Chronology for 1959".Marshall Evening Chronicle.December 31, 1959. pp. 4–5.OCLC18110507.RetrievedAugust 21,2013– via NewspaperArchive.
  62. ^MSHD (1961),Kalamazoo inset;MSHD (1962),Kalamazoo inset.
  63. ^MSHD & Rand McNally (1940b),Battle Creek inset;MSHD & Rand McNally (1940c),Battle Creek inset.
  64. ^MSHD (1961),Battle Creek inset;MSHD (1962),Battle Creek inset.
  65. ^abMSHD (1960),§ M10.
  66. ^abMSHD (1961),§ M10.
  67. ^MSHD (1951b),§ M11;MSHD (1952a),§ M11.
  68. ^MSHD (1960),Jackson inset;MSHD (1961),Jackson inset.
  69. ^Michigan Department of Transportation (May 7, 2010)."Contract Number 2010-0086".Michigan Department of Transportation. Archived fromthe originalon July 15, 2012.RetrievedMay 7,2010– via Yahoo! Groups: Great Lakes Roads.
  70. ^MSHD & Rand McNally (1942),Grand Rapids inset.
  71. ^abcdMSHD (1953a),Grand Rapids inset;MSHD (1953b),Grand Rapids inset.
  72. ^MSHD (1962),Grand Rapids inset;MSHD (1963),Grand Rapids inset.
  73. ^abMSHD (1956a),Detroit Area inset; (MSHD 1956b,Detroit Area inset),
  74. ^MSHD (1961),Detroit Area inset;MSHD (1962),Detroit Area inset.
  75. ^MSHD (1962),§ M12;MSHD (1963),§ M12.
  76. ^MSHD (1958),§ L12;MSHD (1960),§ L12.
  77. ^MDOT (2006),§ L12;MDOT (2007),§ L12.
  78. ^MDSHT (1975),§ L12;MDSHT (1976),§ L12.
  79. ^MSHD (1953a),Saginaw inset;MSHD (1953b),Saginaw inset.
  80. ^MSHD (1961),Saginaw inset;MSHD (1962),Saginaw inset.
  81. ^MSHD & Rand McNally (1940c),Bay City inset;MSHD & Rand McNally (1941a),Bay City inset.
  82. ^MSHD (1960),Bay City inset;MSHD (1961),Bay City inset.
  83. ^MSHD & Rand McNally (1941b),§ E12;MSHD & Rand McNally (1942),§ E12.
  84. ^abMSHD (1945),§ N13.
  85. ^MSHD & Rand McNally (1937a),§ N13;MSHD & Rand McNally (1937b),§ N13.
  86. ^MSHD & Rand McNally (1939b),§ K14;MSHD & Rand McNally (1940a),§ K14.
  87. ^abMSHD (1963),§ K14;MSHD (1964),§ K14.
  88. ^MDSH (1973),Port Huron inset;MDSHT (1974),Port Huron inset.
  89. ^MDSH (1967),§ M10;MDSH (1968),§ M10.
  90. ^MDSH (1972),§ M10;MDSH (1973),§ M10.
  91. ^MSHD (1962),§ L10;MSHD (1963),§ L10.
  92. ^MDSHT (1974),§ L10;MDSHT (1975),§ L10.
  93. ^MSHD & Rand McNally (1936),Lansing inset.
  94. ^MSHD (1950a),Lansing inset;MSHD (1950b),Lansing inset.
  95. ^MDOT (1984),Lansing inset;MDOT (1985),Lansing inset.
  96. ^abMDOT (2002b),Lansing inset;MDOT (2003b),Lansing inset.
  97. ^MDOT (1998),§ K11;MDOT (1999),§ K11.
  98. ^abcdefgMSHD (1961),§§ I10–K11;MSHD (1962),§§ I10–K11.
  99. ^MDOT (1987),§§ N7–N8;MDOT (1988),§§ N7–N8.
  100. ^Schirripa, Nick (April 13, 2010)."US 12 BR Resurfacing in Niles to Start April 19"(Press release). Michigan Department of Transportation. Archived fromthe originalon December 10, 2010.RetrievedApril 28,2010.
    ——— (April 22, 2010)."MDOT Meeting to Discuss Replacement of Historic Niles Bridge"(Press release). Michigan Department of Transportation. Archived fromthe originalon October 12, 2012.RetrievedApril 28,2010.
  101. ^MSHD & Rand McNally (1942),§ M7;MSHD & Rand McNally (1943),§ M7.
  102. ^MSHD (1963),§ M7;MSHD (1964),§ M7.
  103. ^MSHD (1954a),§ L8;MSHD (1954b),§ L8.
  104. ^MDOT (2004a),§ L8;MDOT (2005),§ L8.
  105. ^abMSHD & Rand McNally1940c,Muskegon inset;MSHD & Rand McNally (1941a),Muskegon inset.
  106. ^MSHD (1964),§ J7;MSHD (1965),§ J7.
  107. ^MDOT (1987),§ J8;MDOT (1988),§ J8.
  108. ^MSHD (1955a),§ J7;MSHD (1955b),§ J7.
  109. ^Michigan Department of Transportation; Village of Pentwater (May 4, 2023). "Memorandum of Understanding Between Michigan Department of Transportation and Village of Pentwater" (Memorandum). Michigan Department of Transportation. MDOT 2023-0410.
    Michigan Department of Transportation; Oceana County Road Commission (May 18, 2023). "Memorandum of Understanding Between Michigan Department of Transportation and Oceana County Road Commission" (Memorandum). Michigan Department of Transportation. MDOT 2023-0459.
  110. ^MDOT (2005),§ I7;MDOT (2006),§ I7.
  111. ^"Bypass To Cut Travel Time by 20 Minutes".The Mining Journal.Marquette, Michigan. November 20, 1963. p. 13.ISSN0898-4964.OCLC9729223.
  112. ^Garner, Dawn (November 9, 2005)."MDOT and City of Marquette Complete Jurisdictional Transfer"(Press release). Michigan Department of Transportation. Archived fromthe originalon March 14, 2007.RetrievedJuly 31,2008.
  113. ^MSHD & Rand McNally (1937a),§ C5;MSHD & Rand McNally (1937b),§ C5.
  114. ^MSHD (1958),§ C5.
  115. ^MSHD & Rand McNally (1939),§ B4;MSHD & Rand McNally (1940a),§ B4.
  116. ^MSHD & Rand McNally (1942),§ B4;
  117. ^MSHD (1956b),Niles inset;MSHD (1957a),Niles inset.
  118. ^MSHD & Rand McNally (1942),§ M12;MSHD & Rand McNally (1943),§ M12.
  119. ^abMSHD (1956a),§ M12;MSHD (1956b),§ M12.
  120. ^MSHD (1958),Jackson inset;MSHD (1960),Jackson inset.
  121. ^MSHD (1946),§ M11;MSHD (1947),§ M11.
  122. ^MSHD (1964),§ M11;MSHD (1965),§ M11.
  123. ^Westaby, Robb (October 30, 2013)."New US 131 Bypass Opens".Grand Rapids, Michigan:WXMI-TV.RetrievedOctober 30,2013.
  124. ^MSHD (1953a),§ N9;MSHD (1953b),§ N9.
  125. ^MSHD (1964),Kalamazoo inset;MSHD (1965),Kalamazoo inset.
  126. ^MSHD (1945),Grand Rapids inset.
  127. ^Special Committee on U.S. Route Numbering (May 22, 2018)."2018 Spring Meeting Report to the Council on Highways and Streets"(PDF)(Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived fromthe original(PDF)on June 3, 2019.
  128. ^MDOT (1983),§ J9;MDOT (1984),§ J9.
  129. ^MSHD (1955b),§ N12;MSHD (1956a),§ N12.

Works cited

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