A large water main has become partiality exposed in a good sized creek due to bank erosion and channel movement. Its happened over the last 40 years since it was installed. I’m looking at ways to add cover to protect the pipe and stabilize it. Riprap, sheet piles and gabions have all been kicked around. Relaying the pipe would cost a fortune so that option is not really on the table right now.
Does anyone know of any similar project or know of any design guidance for protecting existing pipes exposed in creek channels? Thanks.
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