Interstate 75 on the Mackinac Bridge between St. Ignace and Mackinaw City, Michigan, is undivided. This is the best natural harbor on Lake Huron between Port Huron and Mackinaw City. Before 1964, people walked the Bridge from Mackinaw City to St. Ignace. The northern terminus is at I-75 in Mackinaw City, Michigan. The Grand Rapids and Indiana Railroad provided rail service between Cincinnati, Ohio and Mackinaw City. Fish species include mackinaw trout, rainbow trout, and brook trout. The "Mackinaw" is stationed at Cheboygan, Michigan. Cheboygan and Mackinaw City did not have rail service until the early 1880s. The highway continues along the lake toward Mackinaw City. Around the margins, such as under Mackinaw City, Michigan, the Precambrian surface is around down. This resulted in the development of the Missouri River mackinaw, which specialized in carrying furs. Mackinaw City's central shopping district is located along Central Avenue downtown. In 1909 Michilimackinac State Park was created in nearby Mackinaw City. Mackinaw City Public Schools provides Mackinaw City students with education. The accident caused a dent in the bow of the "Mackinaw" on her starboard side.