Sacramento, CA — Rehabilitation of Failed Corrugated Metal Pipe Spillways

Sacramento, CA CMP spillway
Our purpose is to help customers choose solutions which will insure that the process fits the application and do this reliably and cost-effectively. All information in this Field Report will assist the engineer to reduce cost and minimize future maintenance costs. In addition, this Field Report will help the task of communicating that there are solutions in use today with a proven track record of installation and use.
Abstract
In Sacramento, CA, the drainage department considered replacing existing pipe used for underthe-road storm drainage. Many of these structures have reached the end of their useful life because of deterioration of the corrugated metal pipes by corrosion. This Field Report presents an existing application where deteriorated pipes were rehabilitated using polyethylene pipe for sliplining existing corrugated metal pipe.
Introduction
The Del Rio Road storm drainage spillway was constructed using a corrugated metal pipe (CMP) spillway. This CMP storm drainage spillway was deteriorating and presented a costly dilemma. Conventional removal of the old conduit, using excavation and replacement with a new pipe, is expensive and time consuming. There was a need to evaluate a less costly alternative repair method.

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