The Grand Island East Channel Light is a lighthouse located just north of Munising, Michigan and was intended to lead boats from Lake Superior through the channel east of Grand Island into the Munising Harbor. Constructed of wood, the light first opened for service in 1868. The light was very hard to see from Lake Superior, and light maintenance was very difficult so the Munising Range Lights were constructed (Munising Rear Range Light, Munising Front Range Light) and this light was removed from service in 1908 or 1913 (sources vary).
The Mackinac Bridge spanning the straights of Mackinac, that connect Lake Michigan and Lake Huron, connects the Upper and Lower Peninsulas of Michigan. The total length of the bridge is over five miles while the suspended length of 8,614 feet makes it the worlds fifth longest suspension bridge.