The Pipe Blog

When designing a Culvert or Storm Sewer the designer needs to take into consideration the type of end treatments that are available in the marketplace. The Federal Highway Administration (FHWA-HIF-12-026 Hydraulic Design Series Number 5) recommends that all pipe 48” in diameter and greater needs to have proper end protection. This selection is one of the major decisions as the Engineer of Record that you must make. Both prefabricated and constructed in place installations are available options for the designer.

Unlike circular pipes, arch-shaped culverts present a unique challenge when it comes to structural rehabilitation. Their non-round geometry and sometimes integrated parapet walls mean that standard sliplining methods don't always apply. However, just because a culvert isn’t round doesn't mean it can’t be effectively relined.

We are often asked, “How much does a reline project cost?” While this is a straightforward question, the answer depends on multiple factors. Before attempting to provide a cost estimate, it’s important to consider the broader perspective—particularly in comparison to traditional open-cut replacement.

Choosing the right culvert or buried bridge structure is crucial for any site application. While this may seem straightforward, it involves numerous practical and functional considerations. Project engineers and site developers must address these factors early in the planning stages.