This report documents the installation and performance of a 1219 mm (48-inch) corrugated smooth lined polyethylene (HDPE) pipe installed during reconstruction of US 127 in Owen County. The pipe installed was manufactured by Advanced Drainage Systems, Inc., and is designated as ADS N-12. pipe.

The culvert was installed in a 6-meter (20-foot) high embankment. The culvert pipe was installed in two sequences. The first half of the structure was bedded and backfilled with No. 8 stone and the second half of the structure was bedded and backfilled with pipe sand (crushed limestone).

The pipe appears to be performing well. The average deflection is approximately 1.0 to 1.5 percent. The maximum deflection recorded was 2.5 percent.

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The contents of this report reflect the views of the authors who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Kentucky Transportation Cabinet, nor the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. The inclusion of manufacturer names and trade names are for identification purposes and are not to be considered as endorsements.