This paper will discuss the latest highway crossing requirements of Alberta Transportation (AT), other regulators (National Energy Board, Alberta Energy Regulator, municipal), design standards (CSA Z 662, municipal), and utility company thinking that determine the need for a casing when crossing an Alberta highway, and then will give specific examples related to highway projects. Casings can be expensive to construct and come with their own unique maintenance requirements. There are hundreds, if not thousands, of utilities crossing under Alberta highways, many within cased crossings. Provincial standards have changed over the decades and are reflected in the latest cased crossing designs on the West Calgary Ring Road project. Along the TransCanada Highway west of Stoney Trail, there are four new utility crossings contemplated, each with its own nuances. The paper will discuss the methodology used to determine whether crossings require casings, and whether Alberta Transportation or other stakeholders drive the need for a casing at specific locations. Examples from the West Calgary Ring Road project will be discussed to help illustrate the design principles.

Access the Conference Proceedings Paper on ASCE Library 


This paper will discuss the latest highway crossing requirements of Alberta Transportation (AT), other regulators (National Energy Board, Alberta Energy Regulator, municipal), design standards (CSA Z 662, municipal), and utility company thinking that determine the need for a casing when crossing an Alberta highway, and then will give specific examples related to highway projects. Casings can be expensive to construct and come with their own unique maintenance requirements. There are hundreds, if not thousands, of utilities crossing under Alberta highways, many within cased crossings. Provincial standards have changed over the decades and are reflected in the latest cased crossing designs on the West Calgary Ring Road project. Along the TransCanada Highway west of Stoney Trail, there are four new utility crossings contemplated, each with its own nuances. The paper will discuss the methodology used to determine whether crossings require casings, and whether Alberta Transportation or other stakeholders drive the need for a casing at specific locations. Examples from the West Calgary Ring Road project will be discussed to help illustrate the design principles.

**[Access the Conference Proceedings Paper on ASCE Library](https://ascelibrary.org/doi/10.1061/9780784483626.019)** 


A Casing if Necessary, But Not Necessarily a Casing: A History of Cased Highway Crossings in Alberta

Papers from sessions of Pipelines 2021, held virtually August 3–6, 2021. Sponsored by the Utility Engineering and Surveying Institute of ASCE.

This collection contains 43 peer-reviewed papers on the planning and asset management of pipelines.
Topics include: machine learning and artificial intelligence; sewermain condition assessment; asset management; watermain condition assessment; and case studies.
This collection will be of interest to design and consulting engineers, utility and pipeline owners, and researchers in the pipeline profession.

[Paper Proceedings](https://doi.org/10.1061/9780784483602)