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| Au Sable Point Light | |
|---|---|
| Name | Au Sable Point Light |
| Location | Michigan, United States |
| Coordinates | 46°34′N 85°04′W |
| Yearbuilt | 1874 |
| Yearlit | 1874 |
| Foundation | stone |
| Construction | brick |
| Height | 87 ft |
| Lens | Fourth-order Fresnel (original) |
| Managingagent | Pictured Rocks National Lakeshore |
Au Sable Point Light
Au Sable Point Light is a historic lighthouse on Lake Superior located in Michigan's Upper Peninsula, within Pictured Rocks National Lakeshore, near Grand Marais, Michigan and Munising, Michigan. Constructed in 1874 during a period of expanding Great Lakes navigation tied to Soo Locks commerce and 18th-century fur trade routes, the station served mariners navigating the shipping lanes used by vessels associated with Duluth, Minnesota and Marquette, Michigan. The light remains associated with federal maritime heritage programs including the National Park Service and preservation efforts by organizations akin to the Lighthouse Preservation Society.
The station was authorized amid 19th-century shipping growth linked to the Great Lakes Storm of 1913 era traffic patterns and the iron ore trade from Ishpeming, Michigan and Escanaba, Michigan. Construction in 1873–1874 involved contractors experienced with federal projects similar to those at Old Presque Isle Light and Split Rock Lighthouse; materials and manpower movements paralleled logistics at Duluth Harbor. The light underwent upgrades in the late 19th and early 20th centuries mirroring technological shifts seen at Marblehead Light and Point Iroquois Light. During World War II era coastal operations, the station cooperated with regional aids comparable to Sault Ste. Marie Canal surveillance, and later became integrated into national programs for decommissioned sites administered by the National Park Service.
The tower is an exemplar of masonry lighthouse design using familiar methods found at Old Presque Isle Light and Marblehead Lighthouse State Park, constructed of cream-colored brick on a stone foundation with an attached keeper's dwelling reflecting Victorian-era federal patterns also evident at Stannard Rock Light. The 87-foot cylindrical form, internal iron staircase, and conical lantern room share engineering lineage with towers designed under supervision akin to the United States Lighthouse Board and architects who influenced works such as Pottawatomie Light. Site siting on a dune and bluff system relates to geomorphology studied at Pictured Rocks National Lakeshore and coastal engineering precedents at Grand Haven, Michigan.
Originally equipped with a fourth-order Fresnel lens, the optical assembly paralleled Fresnel deployments at Old Point Comfort and Rock of Ages Light installations, employing glass manufacturing techniques contemporaneous with firms serving Drop Forge suppliers to maritime aids. The lantern used kerosene illuminants initially, then progressed to mechanisms similar to electrification schemes at Split Rock Lighthouse and automated beacons like those installed at Grand Traverse Light. Modern navigational supplementation includes electronic aids comparable to systems used near Detroit Harbor and radar beacons employed in the Saint Lawrence Seaway.
Keeper assignments followed patterns of federal civil service posts analogous to staffing at Point Betsie Light and Big Sable Point Light, with resident keepers and families maintaining the lens, fog signal, and logbooks; personnel documented contacts with regional agencies like offices in Marquette, Michigan and Munising, Michigan. Automation trends in the mid-20th century paralleled conversions at Whitefish Point Light and led to reduced on-site staffing, while volunteers and park personnel now perform stewardship roles similar to teams at Grand Portage National Monument.
Preservation actions reflect standards promoted by the National Park Service and historic preservation charters paralleling projects at Washington Monument maintenance sites and lighthouse restorations like Pictured Rocks. Structural stabilization, masonry repointing, and lantern room conservation were undertaken using techniques comparable to interventions at Split Rock Lighthouse State Park and funded through partnerships modeled on those between the National Trust for Historic Preservation and local historical societies. Interpretive restoration efforts align with policies influenced by the Historic American Buildings Survey.
Access is managed through Pictured Rocks National Lakeshore visitor facilities, with approach options similar to trails serving Chapel Rock and boat tours operating from Munising, Michigan and Grand Marais, Michigan. Tourism programming mirrors interpretive activities found at Isle Royale National Park and regional cultural heritage festivals, offering guided tours, educational signage, and seasonal events coordinated with entities like county historical societies and concession operators serving Hiawatha National Forest visitors.
The light occupies a dunescape adjacent to Lake Superior, within ecosystems comparable to those preserved at Pictured Rocks National Lakeshore and Hiawatha National Forest, hosting dune grasses, migratory bird habitat used by species tracked in studies at Seney National Wildlife Refuge and shoreline communities influenced by Lake Superior's thermal regimes as monitored near Isle Royale. Coastal processes affecting bluff erosion and habitat succession echo concerns addressed in management plans for Sleeping Bear Dunes National Lakeshore and inform conservation practices employed by federal and nonprofit partners.
Category:Lighthouses in Michigan Category:National Register of Historic Places in Alger County, Michigan