Business US Highway 127 (
Bus. US 127) is a
business loop through
Alma. The highway starts at a partial interchange for exit 123 on
US 127 in a rural area east of Alma. There are a few businesses adjacent to the interchange and an intersection with State Road, which provides access to another partial interchange with US 127 as well as the
Bus. US 127 for St. Louis. Continuing westward along Lincoln Road, the landscape along the southern leg of Bus. US 127 comprises farm land. Once the highway enters Alma, the street name changes to Superior Street. Bus. US 127 crosses the
Pine River and runs through residential neighborhoods on the eastern side of Alma before entering the downtown area. At an intersection with Wright Avenue to the east of the campus of
Alma College, Bus. US 127 turns northward. North of downtown, the business loop crosses another residential area before passed the hospital and more commercial properties. In
Pine River Township north of the city, Bus. US 127 intersects
M-46 (Monroe Road). M-46 connects the Alma business loop to the St. Louis business loop and a partial interchange with US 127, while the Alma business loop continues less than half a mile (0.6 km) to the partial interchange with US 127 that serves as the business loop's northern terminus. When the state highway system was initially signposted in 1919, the highway running north–south through the Alma area was numbered M-14. In 1926, this highway was renumbered as part of
US 27. The new highway designation was supposed to pass through
St. Louis instead of Alma, but US 27 initially followed the routing of M-14. By the end of 1929, the mainline of US 27 was shifted to its desired routing through St. Louis, and the former route of it through Alma became
US 27A. An
expressway through
Gratiot County opened in late 1961, and US 27 was rerouted to follow it, bypassing Alma to the east. The former route of US 27A along Lincoln Road/Superior Street and Wright Avenue/Alger Road) in Alger was designated
Bus. US 27 at this time. In 1999, 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. After the change was implemented, Bus. US 27 was renumbered to Bus. US 127 as with all of the other similar business routes in the state to reflect the new parent highway designation.
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