Sand Island Light (Wisconsin)
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| Location | Sand Island, Wisconsin |
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| Coordinates | 47°00′11.91″N 90°56′14.72″W / 47.0033083°N 90.9374222°WCoordinates: 47°00′11.91″N 90°56′14.72″W / 47.0033083°N 90.9374222°W |
| Year first lit | 1881 |
| Automated | 1921 |
| Deactivated | 1933-1980 |
| Foundation | Stone |
| Construction | Sandstone |
| Tower shape | Octagonal |
| Height | 42 feet (13 m) |
| Focal height | 56 feet (17 m) |
| Original lens | Fourth order Fresnel lens |
| Current lens | SeaLite LED Marine Lantern |
| Range | 9 nautical miles (17 km; 10 mi) |
| Characteristic | White, flashing, 6 s |
| ARLHS number | USA-722 |
| USCG number | 7-15580 |
The Sand Island Light is a lighthouse located on the northern tip of Sand Island, one of the Apostle Islands, in Lake Superior in Bayfield County, Wisconsin, near the city of Bayfield.
The Lighthouse Board chose to use a design that had been used on McGulpin Point Light in 1868; Eagle Harbor Light in 1871; and White River Light in 1875.
Currently owned by the National Park Service and part of the Apostle Islands National Lakeshore, it was added to the National Register of Historic Places in 1977, part of reference number 77000145. Listed in the Library of Congress Historic American Buildings Survey, WI-313.
Attached to the lighthouse is a Norman gothic keepers quarters.
In 1871, the Lighthouse Board asked Congress for funds to construct a lighthouse on Sand Island to both better guide ships toward the Raspberry Island Light and mark the Western edge of the Apostle Islands. However, Congress rejected the request for this and the next six years. In 1880, Congress finally agreed to erect a lighthouse, and sent an engineer to begin planning for the construction of the station. Sand Island Light was built from the same designs as three other lighthouses, but with the local Apostle Islands Brownstone instead of brick. The masons opened a hole for the cellar, and then began building the 26-by-30-foot (7.9 by 9.1 m) dwelling, and added the 44-foot-tall (13 m) tower in the Western corner of the structure. As the lighthouse neared completion, a fixed white Fourth Order Fresnel lens was placed in the lantern room. An acting keeper was appointed, and the light was first lit on September 25, 1881. The acting keeper, Charles Lederle, was appointed permanent keeper the next year.
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