Keweenaw Upper Breakwater Repairs

he breakwater is approximately 2,645 feet long and consists of timber crib and rubble mound construction. The inner 845 feet is a timber crib with concrete cap covered in armor stone. The remaining 1,800 feet of the breakwater is rock filled timber crib covered in armor stone. The breakwater was con

structed as part of several projects that began in 1898 with the outer 1,800 feet finished in 1933. Rehabilitation projects have also been completed on the breakwater with the last occurring in the early 2000s. Non-native stamp sand is curr