Wing walls are provided at both ends of the culverts or abutments to retain the earth filling of the approaches. Their design period depends upon the nature of the embankment and does not depend upon the type or parts of the culvert.

Strata wing walls are manufactured from Polyethylene (LDPE) which allows for a light weight unit making it easy to transport and install. Once installation has been completed, simple fill the inside wall of the wing wall with water or sand. 

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