Milan, IL — Rehabilitation of Failed Corrugated Metal Pipe

Milan, IL CMP Culvert

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.
Rock Island County had used sliplining in the past, but in this application the road way also served as a levee. This Field Report presents an existing application where a deteriorated metal pipe was rehabilitated using Snap-Tite pipe for sliplining.
Rock Island County had a corrugated metal pipe culvert that was deteriorating and presented a costly dilemma. Conventional methods were expensive and time consuming. There was a need to evaluate a less costly alternative repair method.
The Problem
The rusted corrugated metal culvert was sunk eight feet down and was a 24-inch ID culvert under a newly resurfaced road which also is a levee. Dig and replace would represent a major cost involving digging, removing, and replacing the old pipe; as well as major traffic tie-ups.

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