A Crib lighthouse is a type of lighthouse whose structure rests on a concrete or masonry foundation supported with wooden beams. The name "crib" refers to the wooden

crib pier A crib pier is a type of pier built with the supporting columns made of 'cribs'.{{cite web , url = http://www.piers.co.uk/piers.htm , title = Piers , publisher = National Piers Society (2006) , accessdate = February 24, 2012 , url-status = de ...

style of construction which was used as a foundation for lighthouses. When it came time to build, wooden cribs were constructed onshore then towed to the site where they were filled with stone so they sank in place. The crib was then leveled and capped with concrete or masonry on which the lighthouse structure was constructed. Crib lighthouses were built extensively in the

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lak ...

region, as the hardrock bottoms of these water bodies provided ideal foundations. Problems arose however if the crib settled unevenly into the earth as was the case with the Detroit River Light.Greenwood, Tom, ''Detroit River Light'' (September, 1998)
Lighthouse Digest. The Spectacle Reef Light is an example of this type of structure.

References

Lighthouses Marine architecture Foundations (buildings and structures) {{Pharology-stub

See also

References