Round Island Light (Michigan)
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| Location | Mackinac County, Michigan |
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| Coordinates | 45°50′13.8″N 84°36′59.7″W / 45.837167°N 84.616583°WCoordinates: 45°50′13.8″N 84°36′59.7″W / 45.837167°N 84.616583°W |
| Year first lit | 1895 |
| Automated | 1924 |
| Deactivated | 1947 |
| Foundation | Concrete pier |
| Construction | Brick |
| Tower shape | Square |
| Markings / pattern | red w/black lantern, trim & attached house w/red lower & cream upper |
| Height | Tower - 57 feet (17 m) |
| Focal height | Focal plane - 53 feet (16 m) |
| Original lens | Fourth Order Fresnel Lens |
| Current lens | 12-inch (300 mm) Tideland signal ML-300 acrylic optic |
| Range | 16 nautical miles; 29 kilometres (18 mi) |
| Characteristic | Fl W 10 seconds |
| ARLHS number | USA-706 |
| USCG number |
7-12s585 |
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Round Island Lighthouse
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U.S. Coast Guard archive photo
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| Nearest city | Mackinac Island, Michigan |
| Area | 0.9 acres (0.36 ha) |
| NRHP Reference # | 74000994 |
| Added to NRHP | August 21, 1974 |
7-12s585
The Round Island Light, also known as the "Old Round Island Point Lighthouse" is a lighthouse located on the west shore of Round Island in the shipping lanes of the Straits of Mackinac, which connect Lake Michigan and Lake Huron. It was deemed necessary because the island is a significant hazard to navigation in the straits, and was seen as an effective complement to the other lights in the area. Because of its color scheme and form — red stone base and wood tower — it has been likened to an old-fashioned schoolhouse.Ferries regularly pass it on their way to (and from) Mackinac Island, and it is a recognizable icon of the upper Great Lakes.
This light is a twin of the Two Harbors Light in Minnesota. Located in Coast Guard District 9, the Round Island Light was built of painted brick in 1895 by a predecessor agency of the United States Coast Guard and Mackinac island Carpenter Frank Rounds. It served as an active, manned lighthouse and fog signal in 1895–1947. It was abandoned in 1947 and replaced by the Round Island Passage Light, an automated light tower located in the adjacent Round Island Channel. Abandoned, the lighthouse fell prey to plunderers and vandals. The structure's deterioration was almost complete in 1972 when a storm caused a corner of the lighthouse structure to collapse.
This event spurred preservation efforts. Round Island Light was listed on the National Register of Historic Places in September 1974, and was added to the list of registered Michigan historic sites in 1978. Emergency work to stabilize the light tower structure was conducted in the 1970s, but the light tower remained gutted and inoperative. Restoration work was conducted in 1995 by the Friends of the Round Island Lighthouse and led by the Great Lakes Lighthouse Keepers Association (GLLKA), aided by Boy Scouts of America Troop 323. The work was partially funded by the state of Michigan, with the help of funds from a special license plate developed by the state to raise donations for lighthouse restoration. In 1973 rip rap was spread around the lighthouse base to help prevent more deterioration. The following year, after it was listed on the National Register of Historic Places, local fund raising efforts collected $12,000 for the project. The Advisory Council on Historic Preservation appropriated $125,000 in 1977 for the project. As a result of the success of this restoration work, the Coast Guard granted permission to relight the Round Island Light. The light was re-lit in 1996.
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