Culvert design and operation guide (C689)

A culvert provides the means of allowing infrastructure (generally a highway, railway or waterway) to cross a watercourse. Culverts are superficially simple structure, but they have the potential to restrict flow (causing flooding), and to adversely affect the aquatic environment. Also, assessment of the hydraulic performance of a culvert can be complex.

This guide adopts a whole life approach to the design and operation of culverts, with a focus on asset management, reflecting the significant changes that have occurred in the business of asset management over the past 10-15 years. The publication also addresses the management of culverts in the context of both the drainage basin in which they sit, and the infrastructure that they form a part of.

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