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| M-55 (Michigan highway) | |
|---|---|
| State | MI |
| Route | 55 |
| Length mi | 152.224 |
| Established | 1926 |
| Direction a | West |
| Terminus a | Ludington |
| Direction b | East |
| Terminus b | Tawas City |
| Counties | Mason County, Lake County, Newaygo County, Osceola County, Roscommon County, Ogemaw County, Iosco County |
M-55 (Michigan highway) is an east–west state trunkline that traverses the Lower Peninsula of Michigan from Ludington on the eastern shore of Lake Michigan to Tawas City on the Saginaw Bay shore of Lake Huron. The highway connects lake ports, recreational areas, and inland communities while intersecting with numbered routes including US 10, US 31, I-75, and US 23. M-55 serves as a cross-peninsula corridor through mixed landscapes that include waterfronts, state forests, and small cities such as Cadillac and Houghton Lake.
M-55 begins in Ludington near the Pere Marquette River and the Ludington State Park, meeting US 10 and US 31 in the west. From there it runs eastward across Mason County into Newaygo County, traversing rural corridors adjacent to Manistee National Forest tracts and passing near communities such as Walhalla and Hersey. East of Newaygo it meets US 131 and continues through Osceola County into the Cadillac area, where it interfaces with M-115 and runs through mixed urban and lakeshore environs near Lake Cadillac and Lake Mitchell. Continuing, the route crosses Roscommon County and skirts the southern edge of the Houghton Lake community, intersecting US 127 and connecting to state recreation areas including Houghton Lake State Forest. Farther east M-55 enters Ogemaw County and traverses forests and agricultural land toward I-75, with which it shares an interchange before proceeding to Iosco County and terminating near Tawas City and the Tawas Point State Park shoreline of Saginaw Bay.
Designated in the 1920s during the original statewide trunkline numbering, the route that became M-55 was aligned to connect port towns on Lake Michigan and Lake Huron similar to contemporaneous initiatives linking waterways undertaken by the Michigan State Highway Department. During the Great Depression era and the subsequent World War II period, improvements to M-55 reflected broader federal and state investments in highways exemplified by projects under programs like those associated with the New Deal and later postwar funding. In the mid-20th century realignments occurred near Cadillac and Houghton Lake to improve safety and traffic flow, paralleling expansions seen on US 10 and US 127. More recent decades saw reconstruction projects tied to interchange upgrades with I-75 and rehabilitation work funded through state highway budgets administered by the Michigan Department of Transportation.
Key connections along the corridor include the junction with US 31 and US 10 at the western terminus near Ludington; crossings or junctions with US 131 near Newaygo County; concurrency and interchanges with M-115 in the Cadillac region; an intersection with US 127 serving central Roscommon County and Houghton Lake; the interchange with I-75 in Ogemaw County; and the eastern terminus at US 23 near Tawas City and Tawas Point State Park.
Traffic volumes on M-55 vary from higher counts in the vicinity of Cadillac and interchanges with I-75 to lower volumes through rural stretches in Mason County and Newaygo County. The corridor supports seasonal recreational traffic to destinations such as Ludington State Park, Houghton Lake State Forest, and Tawas Point State Park, as well as commercial movements linked to regional agriculture and timber operations in areas near the Manistee National Forest and state forest parcels. M-55 also functions as an alternate east–west route when incidents affect parallel corridors like US 10 or US 23, and it forms part of regional evacuation and emergency routing plans coordinated with county agencies such as those in Mason County and Iosco County.
Maintenance responsibility lies with the Michigan Department of Transportation, which schedules resurfacing, snow removal, and bridge rehabilitation projects on M-55 in coordination with county road commissions including Mason County Road Commission, Osceola County Road Commission, and Ogemaw County Road Commission. Recent and planned projects have targeted pavement preservation, shoulder improvements, and intersection safety enhancements at nodes with US 127 and US 131, consistent with statewide pavement management practices. Future development discussions have included corridor safety audits influenced by statewide strategic plans and federal funding opportunities under programs administered by the Federal Highway Administration and coordinated through the Michigan Transportation Commission to address projected traffic, multimodal access, and resilience against severe weather impacts along lakefront termini like Ludington and Tawas City.
Category:State highways in Michigan