H-58 is a county-designated highway in the US state of Michigan that runs eastwest 69 miles between the communities of Munising and Deer Park in the Upper Peninsula The western section is routed through Pictured Rocks National Lakeshore, a national park on Lake Superior that was created on October 15, 1966, and through the adjacent Lake Superior State Forest in Alger County A roadway was present along parts of today's H-58 by the late 1920s; initially, this gravel and earth county road between Munising and Kingston Corners connected with other roads to Grand Marais. In the 1930s, another segment was built to connect to Deer Park and to fill in the gap between Kingston Corners and Grand Marais. The H-58 designation was created after the county-designated highway system itself was formed in 1970. Federal legislation from the 1990s allowed the National Park Service to fund improvements to H-58 as the main access road to the park. Paving projects were completed between 2006 and 2010 along the entire length of H-58 in Alger County; the segment in Luce County is still a gravel road.