Kuril Flyover - Elegant by Natural Solution

Kuril 'flyover' is in reality a road-rail traffic interchange in Dhaka city which has been opened to traffic in August 2013. The interchange replaces two skewed major-major T-junctions across a multi-track railway level-crossing. The congested intersection has a projected ADT of 452 000 PCU in 2020. Complex road-rail traffic interaction, severe space constraint, generous railway clearance demand and height restriction by civil aviation authority offered a unique intersection problem with no standard solution. This paper describes development of a non-standard interchange solution and attempts to establish that elegant structures are the natural outcome of straightforward engineering. Core of the solution is an elegant central lake developed from a wetland, perimeter of which acts as a one-way traffic roundabout. The tributary left-merging traffic would arrive and depart by at-grade roads, or via 'flyovers' where obstructions such as railway and conflicting traffic streams exist.