Running just about in Michigan, US 127 runs north–south up the center of the
Lower Peninsula. North of its junction with
US 223 in
Lenawee County, it is listed as a part of the
National Highway System, a system of roads importance to the nation's economy, defense and mobility. As a
state trunkline highway, the roadway is maintained by the
Michigan Department of Transportation (MDOT), and it includes approximately of freeway in two segments, the southernmost running between
Jackson and
Clinton counties, separated by a gap from the northernmost segment between
Gratiot and
Crawford counties.
State line to Lansing US 127 enters Michigan as a two-lane highway south of
Hudson called Meridian Road, which follows the course (with minor deviations) of the
Michigan Meridian used to
survey Michigan in the early 19th century. From the state line north, US 127 follows the
Hillsdale–
Lenawee county line north through agricultural areas in
Southern Michigan. The highway intersects
M-34 at Hudson. Near Beecher Road north of the city, US 127 veers westward, off the county line and travels fully within Hillsdale County for about . Near intersections with Manitou and Adams roads south of
Addison, it crosses fully into Lenawee County. The highway continues due north from Addison to an intersection with
US 223's northern terminus in the northwestern corner of the county, where US 127 turns northwesterly. About a mile (1.6 km) farther north, US 127 intersects
US 12 east of
Somerset. US 127 continues northward, clipping through the corner of Hillsdale County and crossing into Jackson County. The highway follows Meridian Road through the southern area of the county until the interchange with
M-50 southeast of
Jackson. There US 127 transitions into a full freeway bypass to the east of Jackson while
Business US 127 (Bus. US 127) follows M-50 into the city. The freeway crosses the
Grand River twice near the South Street interchange. Northeast of Jackson, US 127 meets
I-94 and turns westward to run concurrently with it along the northern edge of Jackson. US 127 crosses the Grand River again on this section of I-94 before turning northward again. The US 127 freeway continues northward, concurrent with M-50 for the first mile and a half (2.4 km) north of I-94. The freeway runs through rural northern Jackson County, paralleled by State Road before curving northwesterly near the county line with
Ingham County. US 127 passes through
Leslie with Churchill and Hull roads running parallel on either side of the freeway. US 127 loses these companion roads at
Mason where it curves northwest to the Lansing area. On the southeastern side of the capital city, US 127 meets
I-96. From this interchange northward, the freeway is also designated as part of
I-496 (Ransom E. Olds Freeway). The I-496/US 127 freeway runs northward through suburban
Delhi Township and into the city of Lansing. Right near the
Red Cedar River, just west of the
Michigan State University campus, I-496 and US 127 separate as US 127 continues north and I-496 turns west. This side of the city is mostly residential neighborhoods as US 127 runs along the
East Lansing border, but there is a commercial area surrounding the Lake Lansing Road interchange before the highway crosses into
Clinton County. US 127 meets
I-69 northeast of Lansing, at the 1998–2002 terminus of the highway. From here north, US 127 follows the former
US 27 north to
Grayling.
Central Michigan The freeway continues northward through rural
Central Michigan farmlands. The freeway passes over the
Looking Glass River near
DeWitt. At Price Road,
Bus. US 127 splits off to connect into
St. Johns while the freeway bypasses the city to the east. US 127 intersects
M-21 due east of downtown St. Johns before the freeway curves west and then north to intersect the northern end of the business loop. North of this interchange, for about , US 127 follows an
expressway segment. It is a four-lane divided highway with some local driveway access and cross traffic through at-grade intersections. The expressway segment passes through an area that is mostly farms with occasional business. Just north of the
Gratiot County line, the highway crosses the
Maple River in the large wetlands area of
Maple River State Game Area. North of the river, the expressway crosses a rail line
at grade north of the one interchange along the expressway, connecting with
M-57. South of
Ithaca, the highway crosses the
Bad River and transitions back to a freeway for the remainder of its routing. There are two interchanges on either end of Ithaca for that city's
Bus. US 127 as the freeway runs east of that city's downtown area. US 127 runs due northward until curving northwesterly to pass between
Alma and
St. Louis. At the adjacent partial interchanges for Lincoln and State roads, two separate business loops depart from the freeway to run through the two cities. The
Bus. US 127 for Alma follows Lincoln Road westward, while the one
for St. Louis runs north on State Road. The freeway crosses the
Pine River while running between Alma and St. Louis before intersecting
M-46 and the northern ends of the two business loops at another pair of adjacent partial interchanges. North of Alma, US 127 turns due north again and crosses into
Isabella County. It runs near the campus of
Central Michigan University, crossing the
Chippewa River in
Mount Pleasant. Mount Pleasant is also home to the Saginaw Band of Chippewa Indians and their tribal reservation. The area between the directional interchanges for
Bus. US 127 in Mount Pleasant is marked by residential neighborhoods; the location of the
M-20 interchange has some commercial properties, however. Otherwise, the landscape in Isabella County is mostly farms adjacent to the freeway. The
business loop for Clare splits from the main freeway south of the
city, and it is also signed to provide access to eastbound
US 10 via
Bus. US 10, which US 127 crosses just south of the
Clare County line. North of this line, US 10 and US 127 meet at a directional interchange. Traffic from westbound US 10 defaults onto northbound US 127, and traffic from the southbound freeway can exit onto eastbound US 10; no other direct connections are provided between the two freeways, requiring the use of the business loops through downtown to make the missing connections. The freeway rounds Lake Shamrock north of downtown and intersects the joint northern end of two business loops. There is a
welcome center in the median of US 127/US 10 before the two highways separate north of the city. US 127 continues northward through rural woodlands in Clare County to the community of
Harrison. There is another
Bus. US 127 for the community, part of which is also
M-61. The freeway passes between Little Long and Sutherland lakes north of Harrison before intersecting the northern end of the business loop. US 127 serves the resort area at
Houghton Lake in
Roscommon County. It crosses the
Muskegon River on the west side of Houghton Lake before running along the western side of
Higgins Lake near the
Crawford County line. US 127 ends about south of Grayling at a partial interchange with
I-75. Traffic along US 127 northbound has access to northbound I-75 and southbound traffic on I-75 can access US 127 southbound. ==History==