Through a collaborative effort that included many stakeholders, the Calgary Municipal Land Corporation (CMLC) led the development of a unique and innovative roundabout solution as part of their off-site East Village works in downtown Calgary. Working within numerous constraints and the boundaries defined by the project objectives, a multi-lane roundabout design was developed that included 2 lines of heavy rail through the centre of the circulatory roadway. To our knowledge, this is the first roundabout in North America that includes multiple heavy rail lines through the central island and circulatory roadway. Designed and constructed in an extremely tight timeframe, this paper describes some of the challenges and opportunities unique to the development of this innovative project. It describes accounting methodologies that were considered in evaluating baseline and design alternatives in terms of sustainability. The project needed to satisfy the traditional criteria expected of transportation facilities including maintaining safety for all road users, enhancing mobility, respecting development patterns and plans for adjacent properties, and engaging local communities through a public information session. For the covering abstract on this conference see ITRD number E220308.
Abstract